diff --git a/Source/Resource/Bitmap/BitmapImage.cpp b/Source/Resource/Bitmap/BitmapImage.cpp
index ed9ced54..f65cc3af 100644
--- a/Source/Resource/Bitmap/BitmapImage.cpp
+++ b/Source/Resource/Bitmap/BitmapImage.cpp
@@ -41,21 +41,6 @@ namespace {
 BitmapImage::BitmapImage() : alpha(0), pixels(nullptr), auxiliary(nullptr) {
 }
 
-// INLINED
-void BitmapImage::Clear() {
-  if (this->pixels) {
-    std::free(this->pixels);
-  }
-
-  if (this->auxiliary) {
-    std::free(this->auxiliary);
-  }
-
-  this->width = this->height = 0;
-  this->pixels = nullptr;
-  this->auxiliary = nullptr;
-}
-
 // OFFSET: 0x0074A680
 // FUNCTION: fn_07866
 bool BitmapImage::CreateAuxiliary(int mode) {
diff --git a/Source/Resource/Bitmap/BitmapImage.h b/Source/Resource/Bitmap/BitmapImage.h
index afba7e2c..bd93ec57 100644
--- a/Source/Resource/Bitmap/BitmapImage.h
+++ b/Source/Resource/Bitmap/BitmapImage.h
@@ -2,6 +2,7 @@
 #define RAGNAROK_SOURCE_RESOURCE_BITMAP_BITMAPIMAGE_H
 
 #include <cstdint>
+#include <cstdlib>
 
 
 struct BitmapImage {
@@ -22,6 +23,21 @@ struct BitmapImage {
   bool DecodeJpeg(const void* data, int bytes);
 };
 
+// INLINED
+inline void BitmapImage::Clear() {
+  if (this->pixels) {
+    std::free(this->pixels);
+  }
+
+  if (this->auxiliary) {
+    std::free(this->auxiliary);
+  }
+
+  this->width = this->height = 0;
+  this->pixels = nullptr;
+  this->auxiliary = nullptr;
+}
+
 #if defined(_WIN32) && !defined(_WIN64)
 static_assert(sizeof(BitmapImage) == 20);
 #endif