diff --git a/Changes b/Changes
index e95de00ea..27ba7325b 100644
--- a/Changes
+++ b/Changes
@@ -4,6 +4,8 @@ The contributors that suggested a given feature are shown in []. Thanks!
 
 * Verilator 3.911 devel
 
+****  Fix enum ranges without colons, bug1204. [Mike Popoloski]
+
 
 * Verilator 3.910 2017-09-07
 
diff --git a/src/verilog.y b/src/verilog.y
index 47e50b56e..2a97499b7 100644
--- a/src/verilog.y
+++ b/src/verilog.y
@@ -1547,7 +1547,7 @@ enum_name_declaration<nodep>:	// ==IEEE: enum_name_declaration
 
 enumNameRangeE<nodep>:		// IEEE: second part of enum_name_declaration
 		/* empty */				{ $$ = NULL; }
-	|	'[' intnumAsConst ']'			{ $$ = new AstRange($1,new AstConst($1,0), $2); }
+	|	'[' intnumAsConst ']'			{ $$ = new AstRange($1, new AstConst($1, 0), new AstConst($1, $2->toSInt()-1)); }
 	|	'[' intnumAsConst ':' intnumAsConst ']'	{ $$ = new AstRange($1,$2,$4); }
 	;
 
@@ -1556,7 +1556,7 @@ enumNameStartE<nodep>:		// IEEE: third part of enum_name_declaration
 	|	'=' constExpr				{ $$ = $2; }
 	;
 
-intnumAsConst<nodep>:
+intnumAsConst<constp>:
 		yaINTNUM				{ $$ = new AstConst($<fl>1,*$1); }
 	;
 
diff --git a/test_regress/t/t_enum.v b/test_regress/t/t_enum.v
index 1681cb603..272471649 100644
--- a/test_regress/t/t_enum.v
+++ b/test_regress/t/t_enum.v
@@ -19,6 +19,7 @@ module t (/*AUTOARG*/);
 	  e3=3,
 	  e5=FIVE,
 	  e10_[2] = 10,
+	  e12,
 	  e20_[5:7] = 25,
 	  e20_z,
 	  e30_[7:5] = 30,
@@ -44,6 +45,7 @@ module t (/*AUTOARG*/);
       if (e5 !== 5) $stop;
       if (e10_0 !== 10) $stop;
       if (e10_1 !== 11) $stop;
+      if (e12 !== 12) $stop;
       if (e20_5 !== 25) $stop;
       if (e20_6 !== 26) $stop;
       if (e20_7 !== 27) $stop;