diff --git a/src/kits/storage/AppFileInfo.cpp b/src/kits/storage/AppFileInfo.cpp
index 8e6b5017bb..bb552af233 100644
--- a/src/kits/storage/AppFileInfo.cpp
+++ b/src/kits/storage/AppFileInfo.cpp
@@ -742,8 +742,8 @@ BAppFileInfo::GetIconForType(const char *type, BBitmap *icon,
 	// set some icon size related variables
 	BString attributeString;
 	BRect bounds;
-	uint32 attrType;
-	size_t attrSize;
+	uint32 attrType = 0;
+	size_t attrSize = 0;
 	switch (which) {
 		case B_MINI_ICON:
 			attributeString = kMiniIconAttribute;
@@ -842,9 +842,9 @@ BAppFileInfo::SetIconForType(const char *type, const BBitmap *icon,
 	// set some icon size related variables
 	BString attributeString;
 	BRect bounds;
-	uint32 attrType;
-	size_t attrSize;
-	int32 resourceID;
+	uint32 attrType = 0;
+	size_t attrSize = 0;
+	int32 resourceID = 0;
 	switch (which) {
 		case B_MINI_ICON:
 			attributeString = kMiniIconAttribute;
diff --git a/src/kits/storage/File.cpp b/src/kits/storage/File.cpp
index 3a0a6a23bd..5b9dadf343 100644
--- a/src/kits/storage/File.cpp
+++ b/src/kits/storage/File.cpp
@@ -222,7 +222,7 @@ BFile::SetTo(const char *path, uint32 openMode)
 		// analyze openMode
 		// Well, it's a bit schizophrenic to convert the B_* style openMode
 		// to POSIX style openFlags, but to use O_RWMASK to filter openMode.
-		BPrivate::Storage::OpenFlags openFlags;
+		BPrivate::Storage::OpenFlags openFlags = 0;
 		switch (openMode & O_RWMASK) {
 			case B_READ_ONLY:
  				openFlags = O_RDONLY;
diff --git a/src/kits/storage/NodeInfo.cpp b/src/kits/storage/NodeInfo.cpp
index d09b102c51..b13200c59b 100644
--- a/src/kits/storage/NodeInfo.cpp
+++ b/src/kits/storage/NodeInfo.cpp
@@ -223,8 +223,8 @@ BNodeInfo::GetIcon(BBitmap *icon, icon_size k) const
 	// set some icon size related variables
 	const char *attribute = NULL;
 	BRect bounds;
-	uint32 attrType;
-	size_t attrSize;
+	uint32 attrType = 0;
+	size_t attrSize = 0;
 	switch (k) {
 		case B_MINI_ICON:
 			attribute = kNIMiniIconAttribute;
@@ -319,8 +319,8 @@ BNodeInfo::SetIcon(const BBitmap *icon, icon_size k)
 	// set some icon size related variables
 	const char *attribute = NULL;
 	BRect bounds;
-	uint32 attrType;
-	size_t attrSize;
+	uint32 attrType = 0;
+	size_t attrSize = 0;
 	switch (k) {
 		case B_MINI_ICON:
 			attribute = kNIMiniIconAttribute;
@@ -349,7 +349,7 @@ BNodeInfo::SetIcon(const BBitmap *icon, icon_size k)
 	if (error == B_OK) {
 		if (icon) {
 			bool otherColorSpace = (icon->ColorSpace() != B_CMAP8);
-			ssize_t written;
+			ssize_t written = 0;
 			if (otherColorSpace) {
 				BBitmap bitmap(bounds, B_CMAP8);
 				error = bitmap.InitCheck();