diff --git a/src/options.c b/src/options.c
index 6f6655f2..33ea0a1f 100644
--- a/src/options.c
+++ b/src/options.c
@@ -288,7 +288,7 @@ static void mi_recurse_exit(void) {
 }
 
 void _mi_fputs(mi_output_fun* out, void* arg, const char* prefix, const char* message) {
-  if (out==NULL || (FILE*)out==stdout || (FILE*)out==stderr) { // TODO: use mi_out_stderr for stderr?
+  if (out==NULL || (void*)out==(void*)stdout || (void*)out==(void*)stderr) { // TODO: use mi_out_stderr for stderr?
     if (!mi_recurse_enter()) return;
     out = mi_out_get_default(&arg);
     if (prefix != NULL) out(prefix, arg);