diff --git a/utils.cc b/utils.cc
index 25cbbcd14..f13c668fe 100644
--- a/utils.cc
+++ b/utils.cc
@@ -574,7 +574,7 @@ int cpe_get_part(const char *cpe) {
   const char *PREFIX = "cpe:/";
   char part;
 
-  if (strncmp(cpe, PREFIX, strlen(PREFIX) != 0))
+  if (strncmp(cpe, PREFIX, strlen(PREFIX)) != 0)
     return -1;
   /* This could be more robust, by decoding character escapes and checking ':'
      boundaries. */