diff --git a/src/vz/vz_sdk.c b/src/vz/vz_sdk.c
index 877692aeba27785dd197f0af29b87755fbe2c96c..2c68c7cb27941cf59df47a9af292f2bad5132f78 100644
--- a/src/vz/vz_sdk.c
+++ b/src/vz/vz_sdk.c
@@ -1609,13 +1609,13 @@ prlsdkInBootList(PRL_HANDLE sdkdom,
     size_t i;
 
     pret = PrlVmDev_GetType(sdktargetdev, &targetType);
-    prlsdkCheckRetExit(pret, -1);
+    prlsdkCheckRetExit(pret, false);
 
     pret = PrlVmDev_GetIndex(sdktargetdev, &targetIndex);
-    prlsdkCheckRetExit(pret, -1);
+    prlsdkCheckRetExit(pret, false);
 
     pret = PrlVmCfg_GetBootDevCount(sdkdom, &bootNum);
-    prlsdkCheckRetExit(pret, -1);
+    prlsdkCheckRetExit(pret, false);
 
     for (i = 0; i < bootNum; ++i) {
         pret = PrlVmCfg_GetBootDev(sdkdom, i, &bootDev);