diff --git a/src/liblimb/include/limb/djbunix.h b/src/liblimb/include/limb/djbunix.h
index 21bc86d..f7a9491 100644
--- a/src/liblimb/include/limb/djbunix.h
+++ b/src/liblimb/include/limb/djbunix.h
@@ -32,7 +32,7 @@ extern int openc_createat(int fd, const char *file);
 extern int open_exclat(int fd, const char *file);
 extern int openc_exclat(int fd, const char *file);
 
-#define open_tmp(tmp)           mkfiletemp(tmp, (create_func) (void (*)(void)) open_excl, 0, NULL)
+#define open_tmp(tmp)           mkfiletemp(tmp, (create_func *) (void (*)(void)) open_excl, 0, NULL)
 #define open_tmpat(fd,tmp)      mkfiletempat(fd, tmp, (createat_fn) (void (*)(void)) open_exclat, 0, NULL)
 
 extern int open_parsed_name(const char *name, open_fn open);