diff --git a/src/parsers/daap_parser.y b/src/parsers/daap_parser.y
index d872fd39..e9a5c5b7 100644
--- a/src/parsers/daap_parser.y
+++ b/src/parsers/daap_parser.y
@@ -283,7 +283,7 @@ static void sql_append(struct daap_result *result, const char *fmt, ...)
   return;
 
  nospace:
-  snprintf(result->errmsg, sizeof(result->errmsg), "Parser output buffer too small (%lu bytes)", sizeof(result->str));
+  snprintf(result->errmsg, sizeof(result->errmsg), "Parser output buffer too small (%zu bytes)", sizeof(result->str));
   result->err = -2;
 }
 
diff --git a/src/parsers/smartpl_parser.y b/src/parsers/smartpl_parser.y
index 614c4d1a..bb5003b9 100644
--- a/src/parsers/smartpl_parser.y
+++ b/src/parsers/smartpl_parser.y
@@ -263,7 +263,7 @@ static void sql_append(struct smartpl_result *result, struct result_part *part,
   return;
 
  nospace:
-  snprintf(result->errmsg, sizeof(result->errmsg), "Parser output buffer too small (%lu bytes)", sizeof(part->str));
+  snprintf(result->errmsg, sizeof(result->errmsg), "Parser output buffer too small (%zu bytes)", sizeof(part->str));
   result->err = -2;
 }