diff --git a/c-programming/io/freadln.c b/c-programming/io/freadln.c
index d4672be..a98c5f4 100644
--- a/c-programming/io/freadln.c
+++ b/c-programming/io/freadln.c
@@ -31,7 +31,8 @@ int freadln(FILE* f, char** output, size_t* length_out) {
 
 	// NOTE: if the file is STDIN, flush STDOUT before waiting for input to
 	// make sure a prompt is displayed
-	fflush(stdout);
+	if (f == stdin)
+		fflush(stdout);
 
 	freadln_length_type length = 0; // initial length