diff --git a/libs/wpp/wpp.c b/libs/wpp/wpp.c
index bce968aaea5..47989f18adb 100644
--- a/libs/wpp/wpp.c
+++ b/libs/wpp/wpp.c
@@ -168,6 +168,8 @@ int wpp_parse( const char *input, FILE *output )
     int ret;
 
     pp_status.input = NULL;
+    pp_status.line_number = 0;
+    pp_status.char_number = 0;
     pp_status.state = 0;
 
     ret = pp_push_define_state();