diff --git a/src/cc65/codegen.c b/src/cc65/codegen.c
index 251c973ee..480cc32ea 100644
--- a/src/cc65/codegen.c
+++ b/src/cc65/codegen.c
@@ -68,12 +68,12 @@
 /* This is a terrible hack that tries to combat the ever reoccuring issue with
    Mingw and PRIXPTR - the macro should have been defined like this for us in
    the first place.
-   NOTE: "I64u" works in the github actions now, so if your local mingw64 fails,
+   NOTE: "I64x" works in the github actions now, so if your local mingw64 fails,
          you probably have to update.
 */
 #if defined(__MINGW64__)
 #undef PRIXPTR
-#define PRIXPTR "I64u"
+#define PRIXPTR "I64x"
 #endif
 
 /*****************************************************************************/