diff --git a/code/PostProcessing/LimitBoneWeightsProcess.cpp b/code/PostProcessing/LimitBoneWeightsProcess.cpp
index 816914ada..71b6f9ec6 100644
--- a/code/PostProcessing/LimitBoneWeightsProcess.cpp
+++ b/code/PostProcessing/LimitBoneWeightsProcess.cpp
@@ -53,7 +53,8 @@ namespace Assimp {
 
 // ------------------------------------------------------------------------------------------------
 // Constructor to be privately used by Importer
-LimitBoneWeightsProcess::LimitBoneWeightsProcess() : mMaxWeights(AI_LMW_MAX_WEIGHTS) {
+LimitBoneWeightsProcess::LimitBoneWeightsProcess() :
+        mMaxWeights(AI_LMW_MAX_WEIGHTS), mRemoveEmptyBones(true) {
     // empty
 }
 
diff --git a/include/assimp/metadata.h b/include/assimp/metadata.h
index 8d387ca00..4fd4adf7e 100644
--- a/include/assimp/metadata.h
+++ b/include/assimp/metadata.h
@@ -113,19 +113,19 @@ struct aiMetadata;
   */
 // -------------------------------------------------------------------------------
 
-inline aiMetadataType GetAiType(bool) {
+inline aiMetadataType GetAiType(const bool &) {
     return AI_BOOL;
 }
 inline aiMetadataType GetAiType(int32_t) {
     return AI_INT32;
 }
-inline aiMetadataType GetAiType(uint64_t) {
+inline aiMetadataType GetAiType(const uint64_t &) {
     return AI_UINT64;
 }
-inline aiMetadataType GetAiType(float) {
+inline aiMetadataType GetAiType(const float &) {
     return AI_FLOAT;
 }
-inline aiMetadataType GetAiType(double) {
+inline aiMetadataType GetAiType(const double &) {
     return AI_DOUBLE;
 }
 inline aiMetadataType GetAiType(const aiString &) {
@@ -137,10 +137,10 @@ inline aiMetadataType GetAiType(const aiVector3D &) {
 inline aiMetadataType GetAiType(const aiMetadata &) {
     return AI_AIMETADATA;
 }
-inline aiMetadataType GetAiType(int64_t) {
+inline aiMetadataType GetAiType(const int64_t &) {
     return AI_INT64;
 }
-inline aiMetadataType GetAiType(uint32_t) {
+inline aiMetadataType GetAiType(const uint32_t &) {
     return AI_UINT32;
 }
 
diff --git a/test/unit/utMetadata.cpp b/test/unit/utMetadata.cpp
index e7cd239aa..76afd52ef 100644
--- a/test/unit/utMetadata.cpp
+++ b/test/unit/utMetadata.cpp
@@ -242,6 +242,22 @@ TEST_F( utMetadata, copy_test ) {
         EXPECT_EQ( i32v, v );
     }
 
+    // uint32_t test
+    {
+        uint32_t v = 0;
+        bool ok = copy.Get("uint32_t", v);
+        EXPECT_TRUE(ok);
+        EXPECT_EQ( ui32, v );
+    }
+
+    // int64_t test
+    {
+        int64_t v = -1;
+        bool ok = copy.Get("int64_t", v);
+        EXPECT_TRUE(ok);
+        EXPECT_EQ( i64, v );
+    }
+
     // uint64_t test
     {
         uint64_t v = 255;
@@ -264,14 +280,14 @@ TEST_F( utMetadata, copy_test ) {
         EXPECT_EQ( dv, v );
     }
 
-    // bool test
+    // string test
     {
         aiString v;
         EXPECT_TRUE( copy.Get( "aiString", v ) );
         EXPECT_EQ( strVal, v );
     }
 
-    // bool test
+    // vector test
     {
         aiVector3D v;
         EXPECT_TRUE( copy.Get( "aiVector3D", v ) );