diff --git a/library/zonedetect.c b/library/zonedetect.c
index 9265c62..2f92ea6 100644
--- a/library/zonedetect.c
+++ b/library/zonedetect.c
@@ -1249,3 +1249,8 @@ done:
     ZDFreeResults(result);
     return output;
 }
+
+void ZDHelperSimpleLookupStringFree(char* str)
+{
+    free(str);
+}
\ No newline at end of file
diff --git a/library/zonedetect.h b/library/zonedetect.h
index 710cb5a..4948ac2 100644
--- a/library/zonedetect.h
+++ b/library/zonedetect.h
@@ -83,6 +83,7 @@ ZD_EXPORT const char *ZDGetErrorString(int errZD);
 ZD_EXPORT float* ZDPolygonToList(const ZoneDetect *library, uint32_t polygonId, size_t* length);
 
 ZD_EXPORT char* ZDHelperSimpleLookupString(const ZoneDetect* library, float lat, float lon);
+ZD_EXPORT void ZDHelperSimpleLookupStringFree(char* str);
 
 #ifdef __cplusplus
 }