diff --git a/lib/include/CL/SDK/Image.hpp b/lib/include/CL/SDK/Image.hpp
index 6e241a4e..3dddbb05 100644
--- a/lib/include/CL/SDK/Image.hpp
+++ b/lib/include/CL/SDK/Image.hpp
@@ -10,7 +10,7 @@ namespace cl {
 namespace sdk {
     struct Image
     {
-        int width = 0, height = 0, pixel_size = 1;
+        size_t width = 0, height = 0, pixel_size = 1;
         cl::vector<unsigned char> pixels;
     };
 
diff --git a/lib/src/SDK/Image.cpp b/lib/src/SDK/Image.cpp
index c17a3d14..e3d4cfa7 100644
--- a/lib/src/SDK/Image.cpp
+++ b/lib/src/SDK/Image.cpp
@@ -31,7 +31,7 @@ namespace sdk {
 
         Image im;
         unsigned char* data =
-            stbi_load(file_name, &im.width, &im.height, &im.pixel_size, 0);
+            stbi_load(file_name, reinterpret_cast<int*>(&im.width), reinterpret_cast<int*>(&im.height), reinterpret_cast<int*>(&im.pixel_size), 0);
 
         if (data == nullptr)
         {
diff --git a/lib/src/Utils/File.cpp b/lib/src/Utils/File.cpp
index a62efb62..4ff44f23 100644
--- a/lib/src/Utils/File.cpp
+++ b/lib/src/Utils/File.cpp
@@ -97,7 +97,7 @@ cl_int cl::util::write_binaries(const cl::Program::Binaries& binaries,
     {
         try
         {
-            for (auto i = 0; i < binaries.size(); ++i)
+            for (auto i = 0U; i < binaries.size(); ++i)
             {
                 string binary_name = string(program_file_name) + "-"
                     + devices.at(i).getInfo<CL_DEVICE_NAME>() + ".bin";
diff --git a/samples/core/copybuffer/main.cpp b/samples/core/copybuffer/main.cpp
index e9b53f45..5429afa6 100644
--- a/samples/core/copybuffer/main.cpp
+++ b/samples/core/copybuffer/main.cpp
@@ -95,7 +95,7 @@ int main(int argc, char** argv)
     }
     else
     {
-        for (size_t i = 1; i < argc; i++)
+        for (int i = 1; i < argc; i++)
         {
             if (!strcmp(argv[i], "-d"))
             {
diff --git a/samples/core/copybufferkernel/main.cpp b/samples/core/copybufferkernel/main.cpp
index 26d046d6..1b14cfc2 100644
--- a/samples/core/copybufferkernel/main.cpp
+++ b/samples/core/copybufferkernel/main.cpp
@@ -106,7 +106,7 @@ int main(int argc, char** argv)
     }
     else
     {
-        for (size_t i = 1; i < argc; i++)
+        for (int i = 1; i < argc; i++)
         {
             if (!strcmp(argv[i], "-d"))
             {