diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index 86d18a5..e60fca9 100644
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -1099,9 +1099,9 @@
     for (glslang::TIntermSequence::iterator c = sequence.begin(); c != sequence.end(); ++c) {
         TIntermNode* child = *c;
         if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpDefault)
-            defaultSegment = codeSegments.size();
+            defaultSegment = (int)codeSegments.size();
         else if (child->getAsBranchNode() && child->getAsBranchNode()->getFlowOp() == glslang::EOpCase) {
-            valueIndexToSegment[caseValues.size()] = codeSegments.size();
+            valueIndexToSegment[caseValues.size()] = (int)codeSegments.size();
             caseValues.push_back(child->getAsBranchNode()->getExpression()->getAsConstantUnion()->getConstArray()[0].getIConst());
         } else
             codeSegments.push_back(child);
@@ -1115,7 +1115,7 @@
 
     // make the switch statement
     std::vector<spv::Block*> segmentBlocks; // returned, as the blocks allocated in the call
-    builder.makeSwitch(selector, codeSegments.size(), caseValues, valueIndexToSegment, defaultSegment, segmentBlocks);
+    builder.makeSwitch(selector, (int)codeSegments.size(), caseValues, valueIndexToSegment, defaultSegment, segmentBlocks);
 
     // emit all the code in the segments
     breakForLoop.push(false);