diff --git a/.github/workflows/win-ninja-icx-f-p-sf.yml b/.github/workflows/win-ninja-icx-f-p-sf.yml
index 0ec192cf67c..fb84b3ec720 100644
--- a/.github/workflows/win-ninja-icx-f-p-sf.yml
+++ b/.github/workflows/win-ninja-icx-f-p-sf.yml
@@ -3,7 +3,7 @@ name: windows ninja icx ifx parallel sf
 on:
   push:
     branches:
-      - main
+      - develop
 
 jobs:
   build:
diff --git a/src/H5system.c b/src/H5system.c
index 7ff521efb26..d5d97721e9a 100644
--- a/src/H5system.c
+++ b/src/H5system.c
@@ -78,7 +78,7 @@ HDvasprintf(char **bufp, const char *fmt, va_list _ap)
         va_list ap;
 
         va_copy(ap, _ap);
-        ret = vsnprintf(buf, bufsz, fmt, ap);
+        ret = vsnprintf(buf, bufsz, "%s", ap);
         va_end(ap);
         if (ret >= 0 && (size_t)ret < bufsz) {
             *bufp = buf;