diff --git a/config/rsrparser.go b/config/rsrparser.go
index 1e73e534f..70209a2cc 100644
--- a/config/rsrparser.go
+++ b/config/rsrparser.go
@@ -119,7 +119,7 @@ func NewRSRParser(parserRules string, allFiltersMatch bool) (rsrParser *RSRParse
 	}
 	rsrParser = &RSRParser{Rules: parserRules, AllFiltersMatch: allFiltersMatch}
 	if strings.HasSuffix(parserRules, utils.FILTER_VAL_END) { // Has filter, populate the var
-		fltrStart := strings.LastIndex(parserRules, utils.FILTER_VAL_START)
+		fltrStart := strings.Index(parserRules, utils.FILTER_VAL_START)
 		if fltrStart < 1 {
 			return nil, fmt.Errorf("invalid RSRFilter start rule in string: <%s>", parserRules)
 		}
diff --git a/config/rsrparser_test.go b/config/rsrparser_test.go
index dff8136dd..ae3a2eb3d 100644
--- a/config/rsrparser_test.go
+++ b/config/rsrparser_test.go
@@ -153,19 +153,15 @@ func TestRSRParsersParseEvent3(t *testing.T) {
 	}
 }
 
-/*
-// Need to review RSRParser to accept ()
-func TestRSRParsersParseWrong(t *testing.T) {
+// TestRSRParsersParseInnerBraces makes sure the inner braces are allowed in a filter rule
+func TestRSRParsersParseInnerBracket(t *testing.T) {
 	rule := "~*req.Service-Information.IN-Information.CalledPartyAddress(~^(00)*(33|0)890240004$)"
 	prsr, err := NewRSRParser(rule, true)
 	if err != nil {
 		t.Error(err)
 	}
 	expAttrName := "*req.Service-Information.IN-Information.CalledPartyAddress"
-	// we expected to get *req.Service-Information.IN-Information.CalledPartyAddress as attrName
-	// and the rest go in filters
 	if prsr.AttrName() != expAttrName {
 		t.Errorf("expecting: %s, received: %s", expAttrName, prsr.AttrName())
 	}
 }
-*/