1 files changed, 3 insertions, 3 deletions
diff --git a/pdf/pdftop.c b/pdf/pdftop.c
index 60c2fd191..9f5cfdf4c 100644
--- a/pdf/pdftop.c
+++ b/pdf/pdftop.c
@@ -60,9 +60,9 @@ extern const char gp_file_name_list_separator;
 static int
 pdf_detect_language(const char *s, int len)
 {
-    if (len < 5)
-        return 1;
-    return memcmp(s, "%!PDF", 5);
+    if (len >= 5 && memcmp(s, "%!PDF", 5) == 0)
+        return 100;
+    return 0;
 }
 
 static const pl_interp_characteristics_t *