diff --git a/Changes b/Changes
index d2707bbec..7dc8d7e66 100644
--- a/Changes
+++ b/Changes
@@ -30,6 +30,7 @@ Verilator 5.015 devel
 * Fix false MULTITOP on bound interfaces (#4438). [Alex Solomatnikov]
 * Fix internal error on real conversion (#4447). [vdhotre-ventana]
 * Fix lifetime unknown error on enum.name (#4448). [jwoutersymatra]
+* Fix display %x formatting of real.
 
 
 Verilator 5.014 2023-08-06
diff --git a/src/V3Width.cpp b/src/V3Width.cpp
index a279cf416..dbae4389d 100644
--- a/src/V3Width.cpp
+++ b/src/V3Width.cpp
@@ -4815,6 +4815,16 @@ private:
                     }
                     break;
                 }
+                case 'b':  // FALLTHRU
+                case 'o':  // FALLTHRU
+                case 'x': {
+                    if (argp) {
+                        AstNodeExpr* const nextp = VN_AS(argp->nextp(), NodeExpr);
+                        if (argp->isDouble()) spliceCvtS(argp, true, 64);
+                        argp = nextp;
+                    }
+                    break;
+                }
                 case 'p': {  // Pattern
                     const AstNodeDType* const dtypep = argp ? argp->dtypep()->skipRefp() : nullptr;
                     const AstBasicDType* const basicp = dtypep ? dtypep->basicp() : nullptr;
diff --git a/test_regress/t/t_dict_ref_type.pl b/test_regress/t/t_assoc_ref_type.pl
similarity index 100%
rename from test_regress/t/t_dict_ref_type.pl
rename to test_regress/t/t_assoc_ref_type.pl
diff --git a/test_regress/t/t_dict_ref_type.v b/test_regress/t/t_assoc_ref_type.v
similarity index 100%
rename from test_regress/t/t_dict_ref_type.v
rename to test_regress/t/t_assoc_ref_type.v
diff --git a/test_regress/t/t_display.out b/test_regress/t/t_display.out
index 3a8033e7d..4d6c52c96 100644
--- a/test_regress/t/t_display.out
+++ b/test_regress/t/t_display.out
@@ -3,6 +3,7 @@
 [0] In top.t.sub.write_m.subblock (sub)
 [0] In top.t.sub2.write_m (sub2)
 [0] In top.t.sub2.write_m.subblock2 (sub2)
+a: -0.4=> 0.4  0  0  0
 [0] Back \ Quote "
 [0] %b=000001100 %0b=1100  %b=00000101010111011101110111100110011001100 %0b=101010111011101110111100110011001100  %b=000001010101111000001001000110100010101100111100000010010001101000101011001111000 %0b=1010101111000001001000110100010101100111100000010010001101000101011001111000
 [0] %B=000001100 %0B=1100  %B=00000101010111011101110111100110011001100 %0B=101010111011101110111100110011001100  %B=000001010101111000001001000110100010101100111100000010010001101000101011001111000 %0B=1010101111000001001000110100010101100111100000010010001101000101011001111000
diff --git a/test_regress/t/t_display.v b/test_regress/t/t_display.v
index 24aa8f428..f04f26cb0 100644
--- a/test_regress/t/t_display.v
+++ b/test_regress/t/t_display.v
@@ -21,11 +21,13 @@ module t;
 
    sub sub ();
    sub2 sub2 ();
+   sub3 sub3 ();
 
    initial begin
       $write("[%0t] In %m: Hi\n", $time);
       sub.write_m;
       sub2.write_m;
+      sub3.write_m;
 
       // Escapes
       $display("[%0t] Back \\ Quote \"", $time);  // Old bug when \" last on the line.
@@ -229,3 +231,18 @@ module sub2;
       end
    endtask
 endmodule
+
+module sub3;
+   function real copyr(input real r);
+      copyr = r;
+   endfunction
+
+   real a, d;
+
+   task write_m;
+      a = 0.4;
+      // verilator lint_off REALCVT
+      $display("a: -0.4=> %.1f  %0d  %0x  %0b", copyr(a), copyr(a), copyr(a), copyr(a));
+      // verilator lint_on REALCVT
+   endtask
+endmodule