diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 8bfe895d5c..39cedbd46e 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -13663,7 +13663,7 @@ virDomainChrDefPtr
 virDomainChrRemove(virDomainDefPtr vmdef,
                    virDomainChrDefPtr chr)
 {
-    virDomainChrDefPtr ret, **arrPtr = NULL;
+    virDomainChrDefPtr ret = NULL, **arrPtr = NULL;
     size_t i, *cntPtr = NULL;
 
     virDomainChrGetDomainPtrsInternal(vmdef, chr->deviceType, &arrPtr, &cntPtr);
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 9fd4c570cd..102fade280 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -16988,7 +16988,7 @@ qemuDomainBlockCommit(virDomainPtr dom,
     virDomainDiskDefPtr disk = NULL;
     virStorageSourcePtr topSource;
     unsigned int topIndex = 0;
-    virStorageSourcePtr baseSource;
+    virStorageSourcePtr baseSource = NULL;
     unsigned int baseIndex = 0;
     virStorageSourcePtr top_parent = NULL;
     bool clean_access = false;
diff --git a/src/storage/storage_backend_logical.c b/src/storage/storage_backend_logical.c
index 167fe58d7e..ecbf430544 100644
--- a/src/storage/storage_backend_logical.c
+++ b/src/storage/storage_backend_logical.c
@@ -575,7 +575,7 @@ static bool
 virStorageBackendLogicalMatchPoolSource(virStoragePoolObjPtr pool)
 {
     virStoragePoolSourceList sourceList;
-    virStoragePoolSource *thisSource;
+    virStoragePoolSource *thisSource = NULL;
     size_t i, j;
     int matchcount = 0;
     bool ret = false;
diff --git a/src/vbox/vbox_common.c b/src/vbox/vbox_common.c
index 8c00a4f5b7..0152b353b0 100644
--- a/src/vbox/vbox_common.c
+++ b/src/vbox/vbox_common.c
@@ -987,7 +987,7 @@ vboxAttachDrivesNew(virDomainDefPtr def, vboxGlobalData *data, IMachine *machine
 {
     /* AttachDrives for 3.0 and later */
     size_t i;
-    nsresult rc;
+    nsresult rc = 0;
     PRUint32 maxPortPerInst[StorageBus_Floppy + 1] = {};
     PRUint32 maxSlotPerPort[StorageBus_Floppy + 1] = {};
     PRUnichar *storageCtlName = NULL;
diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c
index cc86bf787e..0fbd5b3297 100644
--- a/src/vbox/vbox_tmpl.c
+++ b/src/vbox/vbox_tmpl.c
@@ -1038,7 +1038,7 @@ static void
 _vboxAttachDrivesOld(virDomainDefPtr def, vboxGlobalData *data, IMachine *machine)
 {
     size_t i;
-    nsresult rc;
+    nsresult rc = 0;
 
     PRUint32 maxPortPerInst[StorageBus_Floppy + 1] = {};
     PRUint32 maxSlotPerPort[StorageBus_Floppy + 1] = {};