diff --git a/src/verilog.y b/src/verilog.y
index 625834280..5ce0b5135 100644
--- a/src/verilog.y
+++ b/src/verilog.y
@@ -3306,42 +3306,42 @@ system_t_call<nodep>:		// IEEE: system_tf_call (as task)
 	|	yD_SWRITEO '(' expr ',' str commaEListE ')'	{ $$ = new AstSFormat($1, $3, *$5, $6, 'o'); }
 	//
 	|	yD_DISPLAY  parenE			{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, NULL); }
-	|	yD_DISPLAY  '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3); }
+	|	yD_DISPLAY  '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3); }
 	|	yD_DISPLAYB  parenE			{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, NULL, 'b'); }
-	|	yD_DISPLAYB  '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3, 'b'); }
+	|	yD_DISPLAYB  '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3, 'b'); }
 	|	yD_DISPLAYH  parenE			{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, NULL, 'h'); }
-	|	yD_DISPLAYH  '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3, 'h'); }
+	|	yD_DISPLAYH  '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3, 'h'); }
 	|	yD_DISPLAYO  parenE			{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, NULL, 'o'); }
-	|	yD_DISPLAYO  '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3, 'o'); }
+	|	yD_DISPLAYO  '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, NULL, $3, 'o'); }
 	|	yD_WRITE    parenE			{ $$ = NULL; }  // NOP
-	|	yD_WRITE    '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3); }
+	|	yD_WRITE    '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3); }
 	|	yD_WRITEB   parenE			{ $$ = NULL; }  // NOP
-	|	yD_WRITEB   '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3, 'b'); }
+	|	yD_WRITEB   '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3, 'b'); }
 	|	yD_WRITEH   parenE			{ $$ = NULL; }  // NOP
-	|	yD_WRITEH   '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3, 'h'); }
+	|	yD_WRITEH   '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3, 'h'); }
 	|	yD_WRITEO   parenE			{ $$ = NULL; }  // NOP
-	|	yD_WRITEO   '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3, 'o'); }
+	|	yD_WRITEO   '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   NULL, $3, 'o'); }
 	|	yD_FDISPLAY '(' expr ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, NULL); }
-	|	yD_FDISPLAY '(' expr ',' exprListE ')' 	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5); }
-	|	yD_FDISPLAYB '(' expr ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, NULL, 'b'); }
-	|	yD_FDISPLAYB '(' expr ',' exprListE ')' { $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5, 'b'); }
-	|	yD_FDISPLAYH '(' expr ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, NULL, 'h'); }
-	|	yD_FDISPLAYH '(' expr ',' exprListE ')' { $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5, 'h'); }
-	|	yD_FDISPLAYO '(' expr ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, NULL, 'o'); }
-	|	yD_FDISPLAYO '(' expr ',' exprListE ')' { $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5, 'o'); }
-	|	yD_FWRITE   '(' expr ',' exprListE ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5); }
-	|	yD_FWRITEB  '(' expr ',' exprListE ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5, 'b'); }
-	|	yD_FWRITEO  '(' expr ',' exprListE ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5, 'h'); }
-	|	yD_FWRITEH  '(' expr ',' exprListE ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5, 'o'); }
+	|	yD_FDISPLAY '(' expr ',' exprDispList ')' 	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5); }
+	|	yD_FDISPLAYB '(' expr ')'			{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, NULL, 'b'); }
+	|	yD_FDISPLAYB '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5, 'b'); }
+	|	yD_FDISPLAYH '(' expr ')'			{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, NULL, 'h'); }
+	|	yD_FDISPLAYH '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5, 'h'); }
+	|	yD_FDISPLAYO '(' expr ')'			{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, NULL, 'o'); }
+	|	yD_FDISPLAYO '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_DISPLAY, $3, $5, 'o'); }
+	|	yD_FWRITE   '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5); }
+	|	yD_FWRITEB  '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5, 'b'); }
+	|	yD_FWRITEO  '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5, 'h'); }
+	|	yD_FWRITEH  '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WRITE,   $3, $5, 'o'); }
 	|	yD_INFO	    parenE			{ $$ = new AstDisplay($1,AstDisplayType::DT_INFO,    NULL, NULL); }
-	|	yD_INFO	    '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_INFO,    NULL, $3); }
+	|	yD_INFO	    '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_INFO,    NULL, $3); }
 	|	yD_WARNING  parenE			{ $$ = new AstDisplay($1,AstDisplayType::DT_WARNING, NULL, NULL); }
-	|	yD_WARNING  '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_WARNING, NULL, $3); }
+	|	yD_WARNING  '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_WARNING, NULL, $3); }
 	|	yD_ERROR    parenE			{ $$ = GRAMMARP->createDisplayError($1); }
-	|	yD_ERROR    '(' exprList ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_ERROR,   NULL, $3);   $$->addNext(new AstStop($1, true)); }
+	|	yD_ERROR    '(' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_ERROR,   NULL, $3);   $$->addNext(new AstStop($1, true)); }
 	|	yD_FATAL    parenE			{ $$ = new AstDisplay($1,AstDisplayType::DT_FATAL,   NULL, NULL); $$->addNext(new AstStop($1, false)); }
 	|	yD_FATAL    '(' expr ')'		{ $$ = new AstDisplay($1,AstDisplayType::DT_FATAL,   NULL, NULL); $$->addNext(new AstStop($1, false)); DEL($3); }
-	|	yD_FATAL    '(' expr ',' exprListE ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_FATAL,   NULL, $5);   $$->addNext(new AstStop($1, false)); DEL($3); }
+	|	yD_FATAL    '(' expr ',' exprDispList ')'	{ $$ = new AstDisplay($1,AstDisplayType::DT_FATAL,   NULL, $5);   $$->addNext(new AstStop($1, false)); DEL($3); }
 	//
 	|	yD_PRINTTIMESCALE			{ $$ = new AstPrintTimeScale($1); }
 	|	yD_PRINTTIMESCALE '(' ')'		{ $$ = new AstPrintTimeScale($1); }
@@ -4084,6 +4084,14 @@ exprList<nodep>:
 	|	exprList ',' expr			{ $$ = $1;$1->addNext($3); }
 	;
 
+exprDispList<nodep>:		// exprList for within $display
+		expr					{ $$ = $1; }
+	|	exprDispList ',' expr			{ $$ = $1; $1->addNext($3); }
+	//			// ,, creates a space in $display
+	|	exprDispList ',' /*empty*/
+			{ $$ = $1; $1->addNext(new AstConst($<fl>2, AstConst::VerilogStringLiteral(), " ")); }
+	;
+
 commaEListE<nodep>:
 		/* empty */				{ $$ = NULL; }
 	|	',' exprList				{ $$ = $2; }
diff --git a/test_regress/t/t_display.out b/test_regress/t/t_display.out
index 7102f4108..efbf48307 100644
--- a/test_regress/t/t_display.out
+++ b/test_regress/t/t_display.out
@@ -51,7 +51,7 @@ b: 000001100 000001100
 hello, from a concatenated string.
 hello, from a concatenated format string [0].
 extra argument:                    0
-                   0: pre argument
+                   0 : pre argument after
 [0] Embedded <#013> return
 [0] Embedded
 multiline
diff --git a/test_regress/t/t_display.v b/test_regress/t/t_display.v
index cfdeea257..02e2e2a54 100644
--- a/test_regress/t/t_display.v
+++ b/test_regress/t/t_display.v
@@ -144,7 +144,7 @@ module t;
       $display("hel", "lo, fr", "om a concatenated string.");
       $write("hel", "lo, fr", "om a concatenated format string [%0t].\n", $time);
       $display("extra argument: ", $time);
-      $display($time, ": pre argument");
+      $display($time,, ": pre argument",, "after");
       $write("[%0t] Embedded \r return\n", $time);
       $display("[%0t] Embedded\
 multiline", $time);