diff --git a/source/common/utility/utf8.cpp b/source/common/utility/utf8.cpp
index 1eec78130..eb6dd6bf5 100644
--- a/source/common/utility/utf8.cpp
+++ b/source/common/utility/utf8.cpp
@@ -249,7 +249,7 @@ const char *MakeUTF8(const char *outline, int *numchars)
 				UTF8String.Push(encode[i]);
 			}
 		}
-		if (numchars) *numchars++;
+		if (numchars) (*numchars)++;
 	}
 	UTF8String.Push(0);
 	return UTF8String.Data();