diff --git a/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ConstantTadHelper.h b/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ConstantTadHelper.h
index 8d60bc3cb..55e2cf480 100644
--- a/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ConstantTadHelper.h
+++ b/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ConstantTadHelper.h
@@ -65,7 +65,7 @@ namespace sd {
          * @return
          */
         FORCEINLINE int cachedEntriesForDevice(int deviceId) {
-            if (deviceId > _cache.size())
+            if ( (size_t)deviceId > _cache.size())
                 throw std::runtime_error("deviceId > number of actual devices");
 
             return _cache[deviceId].size();
diff --git a/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ShapeUtils.h b/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ShapeUtils.h
index 7cf0e1ed4..9aaf144cd 100644
--- a/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ShapeUtils.h
+++ b/cavis-native/cavis-native-lib/src/main/cpp/blas/helpers/ShapeUtils.h
@@ -216,7 +216,7 @@ namespace sd {
 //////////////////////////////////////////////////////////////////////////
 FORCEINLINE bool ShapeUtils::isPermutNecessary(const std::vector<int>& permut) {
 
-    for(int i=0; i<permut.size(); ++i)
+    for(size_t i=0; i<permut.size(); ++i)
         if(permut[i] != i)
             return true;