diff --git a/ai-compliance-sdk/internal/ucca/multi_regulation.go b/ai-compliance-sdk/internal/ucca/multi_regulation.go
index a9a33ef8..890a5e2c 100644
--- a/ai-compliance-sdk/internal/ucca/multi_regulation.go
+++ b/ai-compliance-sdk/internal/ucca/multi_regulation.go
@@ -72,9 +72,9 @@ func balanceByRegulation(pool []LegalSearchResult, regs []detectedRegulation, to
 			if matched[pi] {
 				continue
 			}
-			code := strings.ToUpper(strings.TrimSpace(pool[pi].RegulationCode))
+			code := strings.TrimSpace(pool[pi].RegulationCode)
 			for _, cv := range r.CodeValues {
-				if code == strings.ToUpper(cv) {
+				if strings.EqualFold(code, cv) {
 					byReg[ri] = append(byReg[ri], pool[pi])
 					matched[pi] = true
 					break