diff --git a/libraries/audio/src/AudioConstants.h b/libraries/audio/src/AudioConstants.h
index 1c6cac71b6..6c4e582117 100644
--- a/libraries/audio/src/AudioConstants.h
+++ b/libraries/audio/src/AudioConstants.h
@@ -27,7 +27,7 @@ namespace AudioConstants {
     const int NETWORK_FRAME_SAMPLES_PER_CHANNEL = NETWORK_FRAME_BYTES_PER_CHANNEL / sizeof(AudioSample);
     const float NETWORK_FRAME_MSECS = (AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL
         / (float)AudioConstants::SAMPLE_RATE) * 1000.0f;
-    const unsigned int NETWORK_FRAME_USECS = (int)floorf(NETWORK_FRAME_MSECS * 1000.0f);
+    const unsigned int NETWORK_FRAME_USECS = (unsigned int)floorf(NETWORK_FRAME_MSECS * 1000.0f);
     const int MIN_SAMPLE_VALUE = std::numeric_limits<AudioSample>::min();
     const int MAX_SAMPLE_VALUE = std::numeric_limits<AudioSample>::max();
 }
diff --git a/libraries/metavoxels/src/Spanner.cpp b/libraries/metavoxels/src/Spanner.cpp
index 044c742347..30bc1f5a59 100644
--- a/libraries/metavoxels/src/Spanner.cpp
+++ b/libraries/metavoxels/src/Spanner.cpp
@@ -1529,7 +1529,7 @@ HeightfieldNode* HeightfieldNode::paintMaterial(const glm::vec3& position, const
         colorContents = _color->getContents();
         
     } else {
-        colorContents = QByteArray(baseWidth * baseHeight * DataBlock::COLOR_BYTES, 0xFFu); 
+        colorContents = QByteArray(baseWidth * baseHeight * DataBlock::COLOR_BYTES, 0xffU); 
     }
     
     int materialWidth = baseWidth, materialHeight = baseHeight;
@@ -1885,7 +1885,7 @@ HeightfieldNode* HeightfieldNode::clearAndFetchHeight(const glm::vec3& translati
         spanner->setHeight(HeightfieldHeightPointer(new HeightfieldHeight(spannerHeightWidth,
             QVector<quint16>(spannerHeightWidth * spannerHeightHeight))));
         spanner->setColor(HeightfieldColorPointer(new HeightfieldColor(spannerColorWidth,
-            QByteArray(spannerColorWidth * spannerColorHeight * DataBlock::COLOR_BYTES, 0xFFu))));
+            QByteArray(spannerColorWidth * spannerColorHeight * DataBlock::COLOR_BYTES, 0xffU))));
         spanner->setMaterial(HeightfieldMaterialPointer(new HeightfieldMaterial(spannerMaterialWidth,
             QByteArray(spannerMaterialWidth * spannerMaterialHeight, 0), QVector<SharedObjectPointer>())));
     }
@@ -2358,7 +2358,7 @@ void HeightfieldNode::mergeChildren(bool height, bool colorMaterial) {
         return;
     }
     if (colorWidth > 0) {
-        QByteArray colorContents(colorWidth * colorHeight * DataBlock::COLOR_BYTES, 0xFFu);
+        QByteArray colorContents(colorWidth * colorHeight * DataBlock::COLOR_BYTES, 0xffU);
         for (int i = 0; i < CHILD_COUNT; i++) {
             HeightfieldColorPointer childColor = _children[i]->getColor();
             if (!childColor) {
diff --git a/tests/octree/src/OctreeTests.cpp b/tests/octree/src/OctreeTests.cpp
index 4380ea13f6..4fc543d5d3 100644
--- a/tests/octree/src/OctreeTests.cpp
+++ b/tests/octree/src/OctreeTests.cpp
@@ -802,7 +802,7 @@ void OctreeTests::propertyFlagsTests(bool verbose) {
             qDebug() << "fill encoded byte array with extra garbage (as if it was bitstream with more content)";
         }
         QByteArray extraContent;
-        extraContent.fill(0xbau, 10);
+        extraContent.fill(0xbaU, 10);
         encoded.append(extraContent);
 
         if (verbose) {