1 files changed, 1 insertions, 1 deletions
diff --git a/lexer.l b/lexer.l
index 68fc402..fea9cd1 100644
--- a/lexer.l
+++ b/lexer.l
@@ -73,7 +73,7 @@ extern const char *parser_input_buffer;
 }
 
 <<EOF>> {
-	if (yyin)
+	if (yyin && yyin != stdin)
 		fclose(yyin);
 	yypop_buffer_state();
 	if (!YY_CURRENT_BUFFER)