diff --git a/engines/gob/parse.cpp b/engines/gob/parse.cpp
index 6f9e86c2d52..4c949183e01 100644
--- a/engines/gob/parse.cpp
+++ b/engines/gob/parse.cpp
@@ -458,7 +458,7 @@ void Parse::printVarIndex() {
 
 int Parse::cmpHelper(byte *operPtr, int32 *valPtr) {
 	byte var_C = operPtr[-3];
-	int cmpTemp;
+	int cmpTemp = 0;
 	if (var_C == OP_LOAD_IMM_INT16) {
 		cmpTemp = (int)valPtr[-3] - (int)valPtr[-1];
 	} else if (var_C == OP_LOAD_IMM_STR) {
diff --git a/engines/gob/parse_v2.cpp b/engines/gob/parse_v2.cpp
index 8f6075fb6ca..dfa01bf29da 100644
--- a/engines/gob/parse_v2.cpp
+++ b/engines/gob/parse_v2.cpp
@@ -797,8 +797,6 @@ int16 Parse_v2::parseExpr(byte stopToken, byte *arg_2) {
 				if ((operStack[brackStart] >= OP_OR) || (operStack[brackStart] == OP_BEGIN_EXPR))
 					brackStart++;
 
-				int cmpTemp;
-
 				switch (operPtr[-2]) {
 				case OP_ADD:
 					if (operStack[brackStart] == OP_LOAD_IMM_INT16) {
@@ -913,7 +911,9 @@ int16 Parse_v2::parseExpr(byte stopToken, byte *arg_2) {
 					valPtr -= 2;
 					break;
 
-				case OP_NEQ:
+				case OP_NEQ: {
+					int cmpTemp = 0;
+
 					if (operPtr[-3] == OP_LOAD_IMM_INT16) {
 						cmpTemp = valPtr[-3] - valPtr[-1];
 					} else if (operPtr[-3] == OP_LOAD_IMM_STR) {
@@ -930,6 +930,7 @@ int16 Parse_v2::parseExpr(byte stopToken, byte *arg_2) {
 					operPtr -= 2;
 					valPtr -= 2;
 					break;
+					}
 
 				default:
 					var_1A = true;
diff --git a/engines/sci/engine/intmap.cpp b/engines/sci/engine/intmap.cpp
index 732b69d4eae..633754ef9cb 100644
--- a/engines/sci/engine/intmap.cpp
+++ b/engines/sci/engine/intmap.cpp
@@ -111,7 +111,7 @@ int IntMapper::lookupKey(int key) const {
 void IntMapper::saveLoadWithSerializer(Common::Serializer &s) {
 	s.syncAsSint32LE(base_value);
 	if (s.isLoading()) {
-		uint32 key, idx;
+		uint32 key = 0, idx = 0;
 		clear();
 		while (true) {
 			s.syncAsSint32LE(key);