1 files changed, 2 insertions, 2 deletions
diff --git a/x2p/str.c b/x2p/str.c
index 634be184e1..88b3c60405 100644
--- a/x2p/str.c
+++ b/x2p/str.c
@@ -41,7 +41,7 @@ register STR *str;
     str->str_pok = 1;
 #ifdef DEBUGGING
     if (debug & 32)
-	fprintf(stderr,"0x%lx ptr(%s)\n",str,str->str_ptr);
+	fprintf(stderr,"0x%lx ptr(%s)\n",(unsigned long)str,str->str_ptr);
 #endif
     return str->str_ptr;
 }
@@ -59,7 +59,7 @@ register STR *str;
     str->str_nok = 1;
 #ifdef DEBUGGING
     if (debug & 32)
-	fprintf(stderr,"0x%lx num(%g)\n",str,str->str_nval);
+	fprintf(stderr,"0x%lx num(%g)\n",(unsigned long)str,str->str_nval);
 #endif
     return str->str_nval;
 }