diff -r c4bcba8023a9 -r bad1547191dc src/import-yum.c
--- a/src/import-yum.c	Sat Aug 23 16:28:31 2014 +0100
+++ b/src/import-yum.c	Thu Apr 14 11:59:56 2016 +0100
@@ -311,11 +311,15 @@
 				    yum_character_data);
 
 	primary = gzopen("primary.xml.gz", "rb");
-	if (primary == NULL)
+	if (primary == NULL) {
+		perror("primary.xml.gz");
 		return NULL;
+	}
 	filelists = gzopen("filelists.xml.gz", "rb");
-	if (filelists == NULL)
+	if (filelists == NULL) {
+		perror("filelists.xml.gz");
 		return NULL;
+	}
 
 	ctx.current_parser = ctx.primary_parser;