diff --git a/tests/fuzz/onefile.c b/tests/fuzz/onefile.c
index caf3ca5..45c3282 100644
--- a/tests/fuzz/onefile.c
+++ b/tests/fuzz/onefile.c
@@ -38,12 +38,14 @@
         return 2;
     }
     if (fread(Data, Size, 1, fp) != 1) {
+        free(Data);
         fclose(fp);
         return 2;
     }
 
     //lauch fuzzer
     LLVMFuzzerTestOneInput(Data, Size);
+    free(Data);
     fclose(fp);
     return 0;
 }