diff --git a/tests/qemufirmwaretest.c b/tests/qemufirmwaretest.c
index 3fbeb2b852b676fde69eb7b239859977fbaee657..340344ebbae26aa438a9c839f2e390863ad29772 100644
--- a/tests/qemufirmwaretest.c
+++ b/tests/qemufirmwaretest.c
@@ -128,6 +128,8 @@ mymain(void)
     if (virTestRun("QEMU FW precedence test", testFWPrecedence, NULL) < 0)
         ret = -1;
 
+    virFileWrapperClearPrefixes();
+
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }
 
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index bd9619ae389f403eb9159b5a9b0e634c04fbbf42..03e8d795954b8eb9eb07e4cdf817f50e722d260e 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -3044,6 +3044,7 @@ mymain(void)
     qemuTestDriverFree(&driver);
     VIR_FREE(fakerootdir);
     virHashFree(capslatest);
+    virFileWrapperClearPrefixes();
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }