diff --git a/backends/imgui_impl_dx12.h b/backends/imgui_impl_dx12.h
index 644c022ff..a57c1694d 100644
--- a/backends/imgui_impl_dx12.h
+++ b/backends/imgui_impl_dx12.h
@@ -43,7 +43,7 @@ struct ImGui_ImplDX12_InitInfo
     D3D12_GPU_DESCRIPTOR_HANDLE LegacySingleSrvGpuDescriptor;
 #endif
 
-    ImGui_ImplDX12_InitInfo()   { memset(this, 0, sizeof(*this)); }
+    ImGui_ImplDX12_InitInfo()   { memset((void*)this, 0, sizeof(*this)); }
 };
 
 // Follow "Getting Started" link and check examples/ folder to learn about using backends!
diff --git a/backends/imgui_impl_vulkan.cpp b/backends/imgui_impl_vulkan.cpp
index de4c5a4aa..4345f2b11 100644
--- a/backends/imgui_impl_vulkan.cpp
+++ b/backends/imgui_impl_vulkan.cpp
@@ -225,7 +225,7 @@ struct ImGui_ImplVulkan_Texture
     VkImageView                 ImageView;
     VkDescriptorSet             DescriptorSet;
 
-    ImGui_ImplVulkan_Texture() { memset(this, 0, sizeof(*this)); }
+    ImGui_ImplVulkan_Texture() { memset((void*)this, 0, sizeof(*this)); }
 };
 
 // Vulkan data
diff --git a/misc/freetype/imgui_freetype.cpp b/misc/freetype/imgui_freetype.cpp
index aeab6dfa0..997bc4340 100644
--- a/misc/freetype/imgui_freetype.cpp
+++ b/misc/freetype/imgui_freetype.cpp
@@ -169,7 +169,7 @@ namespace
         const FT_Glyph_Metrics* LoadGlyph(uint32_t in_codepoint);
         const FT_Bitmap*        RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info);
         void                    BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table = nullptr);
-        FreeTypeFont()          { memset(this, 0, sizeof(*this)); }
+        FreeTypeFont()          { memset((void*)this, 0, sizeof(*this)); }
         ~FreeTypeFont()         { CloseFont(); }
 
         // [Internals]