diff --git a/src/eval.c b/src/eval.c
index 8faa2ed..163401d 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -199,7 +199,7 @@ liblex_result eval_all(char* string, int index, eval_config* config, ll* matches
     if(new_match){
       result = eval_word(string, index, config, new_match);
       if(result == LIBLEX_SUCCESS){
-        if(new_match->pattern < 0){
+        if(new_match->pattern < 0 || new_match->from - new_match->to == 0){
           done = 1;
           free(new_match);
           if(string[index]){