diff --git a/src/engine/client/graphics_threaded.cpp b/src/engine/client/graphics_threaded.cpp
index 1e3e5a97f..dc97ee71d 100644
--- a/src/engine/client/graphics_threaded.cpp
+++ b/src/engine/client/graphics_threaded.cpp
@@ -610,7 +610,7 @@ bool CGraphics_Threaded::CheckImageDivisibility(const char *pFileName, CImageInf
 	return ImageIsValid;
 }
 
-bool CGraphics_Threaded::CheckImageFormatRGBA(const char *pFileName, CImageInfo &Img)
+bool CGraphics_Threaded::IsImageFormatRGBA(const char *pFileName, CImageInfo &Img)
 {
 	if(Img.m_Format != CImageInfo::FORMAT_RGBA && Img.m_Format != CImageInfo::FORMAT_ALPHA)
 	{
diff --git a/src/engine/client/graphics_threaded.h b/src/engine/client/graphics_threaded.h
index ab0098a73..34d8f8ec6 100644
--- a/src/engine/client/graphics_threaded.h
+++ b/src/engine/client/graphics_threaded.h
@@ -900,7 +900,7 @@ public:
 	void FreePNG(CImageInfo *pImg) override;
 
 	bool CheckImageDivisibility(const char *pFileName, CImageInfo &Img, int DivX, int DivY, bool AllowResize) override;
-	bool CheckImageFormatRGBA(const char *pFileName, CImageInfo &Img) override;
+	bool IsImageFormatRGBA(const char *pFileName, CImageInfo &Img) override;
 
 	void CopyTextureBufferSub(uint8_t *pDestBuffer, uint8_t *pSourceBuffer, int FullWidth, int FullHeight, int ColorChannelCount, int SubOffsetX, int SubOffsetY, int SubCopyWidth, int SubCopyHeight) override;
 	void CopyTextureFromTextureBufferSub(uint8_t *pDestBuffer, int DestWidth, int DestHeight, uint8_t *pSourceBuffer, int SrcWidth, int SrcHeight, int ColorChannelCount, int SrcSubOffsetX, int SrcSubOffsetY, int SrcSubCopyWidth, int SrcSubCopyHeight) override;
diff --git a/src/engine/client/graphics_threaded_null.h b/src/engine/client/graphics_threaded_null.h
index 2a645a5d5..095b06947 100644
--- a/src/engine/client/graphics_threaded_null.h
+++ b/src/engine/client/graphics_threaded_null.h
@@ -60,7 +60,7 @@ public:
 	void FreePNG(CImageInfo *pImg) override{};
 
 	bool CheckImageDivisibility(const char *pFileName, CImageInfo &Img, int DivX, int DivY, bool AllowResize) override { return false; };
-	bool CheckImageFormatRGBA(const char *pFileName, CImageInfo &Img) override { return false; };
+	bool IsImageFormatRGBA(const char *pFileName, CImageInfo &Img) override { return false; };
 
 	void CopyTextureBufferSub(uint8_t *pDestBuffer, uint8_t *pSourceBuffer, int FullWidth, int FullHeight, int ColorChannelCount, int SubOffsetX, int SubOffsetY, int SubCopyWidth, int SubCopyHeight) override{};
 	void CopyTextureFromTextureBufferSub(uint8_t *pDestBuffer, int DestWidth, int DestHeight, uint8_t *pSourceBuffer, int SrcWidth, int SrcHeight, int ColorChannelCount, int SrcSubOffsetX, int SrcSubOffsetY, int SrcSubCopyWidth, int SrcSubCopyHeight) override{};
diff --git a/src/engine/graphics.h b/src/engine/graphics.h
index 6d1bf7c2c..32051d624 100644
--- a/src/engine/graphics.h
+++ b/src/engine/graphics.h
@@ -241,7 +241,7 @@ public:
 	virtual void FreePNG(CImageInfo *pImg) = 0;
 
 	virtual bool CheckImageDivisibility(const char *pFileName, CImageInfo &Img, int DivX, int DivY, bool AllowResize) = 0;
-	virtual bool CheckImageFormatRGBA(const char *pFileName, CImageInfo &Img) = 0;
+	virtual bool IsImageFormatRGBA(const char *pFileName, CImageInfo &Img) = 0;
 
 	// destination and source buffer require to have the same width and height
 	virtual void CopyTextureBufferSub(uint8_t *pDestBuffer, uint8_t *pSourceBuffer, int FullWidth, int FullHeight, int ColorChannelCount, int SubOffsetX, int SubOffsetY, int SubCopyWidth, int SubCopyHeight) = 0;
diff --git a/src/game/client/components/skins.cpp b/src/game/client/components/skins.cpp
index fd74f76bc..771b7d16f 100644
--- a/src/game/client/components/skins.cpp
+++ b/src/game/client/components/skins.cpp
@@ -133,7 +133,7 @@ int CSkins::LoadSkin(const char *pName, CImageInfo &Info)
 		Console()->Print(IConsole::OUTPUT_LEVEL_ADDINFO, "game", aBuf);
 		return 0;
 	}
-	if(!Graphics()->CheckImageFormatRGBA(pName, Info))
+	if(!Graphics()->IsImageFormatRGBA(pName, Info))
 	{
 		str_format(aBuf, sizeof(aBuf), "skin format is not RGBA: %s", pName);
 		Console()->Print(IConsole::OUTPUT_LEVEL_ADDINFO, "game", aBuf);
diff --git a/src/game/client/gameclient.cpp b/src/game/client/gameclient.cpp
index 4ada4c361..fb551a7fd 100644
--- a/src/game/client/gameclient.cpp
+++ b/src/game/client/gameclient.cpp
@@ -2747,7 +2747,7 @@ void CGameClient::LoadGameSkin(const char *pPath, bool AsDir)
 		else
 			LoadGameSkin(pPath, true);
 	}
-	else if(PngLoaded && Graphics()->CheckImageDivisibility(aPath, ImgInfo, g_pData->m_aSprites[SPRITE_HEALTH_FULL].m_pSet->m_Gridx, g_pData->m_aSprites[SPRITE_HEALTH_FULL].m_pSet->m_Gridy, true) && Graphics()->CheckImageFormatRGBA(aPath, ImgInfo))
+	else if(PngLoaded && Graphics()->CheckImageDivisibility(aPath, ImgInfo, g_pData->m_aSprites[SPRITE_HEALTH_FULL].m_pSet->m_Gridx, g_pData->m_aSprites[SPRITE_HEALTH_FULL].m_pSet->m_Gridy, true) && Graphics()->IsImageFormatRGBA(aPath, ImgInfo))
 	{
 		m_GameSkin.m_SpriteHealthFull = Graphics()->LoadSpriteTexture(ImgInfo, &g_pData->m_aSprites[SPRITE_HEALTH_FULL]);
 		m_GameSkin.m_SpriteHealthEmpty = Graphics()->LoadSpriteTexture(ImgInfo, &g_pData->m_aSprites[SPRITE_HEALTH_EMPTY]);
@@ -2900,7 +2900,7 @@ void CGameClient::LoadEmoticonsSkin(const char *pPath, bool AsDir)
 		else
 			LoadEmoticonsSkin(pPath, true);
 	}
-	else if(PngLoaded && Graphics()->CheckImageDivisibility(aPath, ImgInfo, g_pData->m_aSprites[SPRITE_OOP].m_pSet->m_Gridx, g_pData->m_aSprites[SPRITE_OOP].m_pSet->m_Gridy, true) && Graphics()->CheckImageFormatRGBA(aPath, ImgInfo))
+	else if(PngLoaded && Graphics()->CheckImageDivisibility(aPath, ImgInfo, g_pData->m_aSprites[SPRITE_OOP].m_pSet->m_Gridx, g_pData->m_aSprites[SPRITE_OOP].m_pSet->m_Gridy, true) && Graphics()->IsImageFormatRGBA(aPath, ImgInfo))
 	{
 		for(int i = 0; i < 16; ++i)
 			m_EmoticonsSkin.m_SpriteEmoticons[i] = Graphics()->LoadSpriteTexture(ImgInfo, &g_pData->m_aSprites[SPRITE_OOP + i]);
@@ -2954,7 +2954,7 @@ void CGameClient::LoadParticlesSkin(const char *pPath, bool AsDir)
 		else
 			LoadParticlesSkin(pPath, true);
 	}
-	else if(PngLoaded && Graphics()->CheckImageDivisibility(aPath, ImgInfo, g_pData->m_aSprites[SPRITE_PART_SLICE].m_pSet->m_Gridx, g_pData->m_aSprites[SPRITE_PART_SLICE].m_pSet->m_Gridy, true) && Graphics()->CheckImageFormatRGBA(aPath, ImgInfo))
+	else if(PngLoaded && Graphics()->CheckImageDivisibility(aPath, ImgInfo, g_pData->m_aSprites[SPRITE_PART_SLICE].m_pSet->m_Gridx, g_pData->m_aSprites[SPRITE_PART_SLICE].m_pSet->m_Gridy, true) && Graphics()->IsImageFormatRGBA(aPath, ImgInfo))
 	{
 		m_ParticlesSkin.m_SpriteParticleSlice = Graphics()->LoadSpriteTexture(ImgInfo, &g_pData->m_aSprites[SPRITE_PART_SLICE]);
 		m_ParticlesSkin.m_SpriteParticleBall = Graphics()->LoadSpriteTexture(ImgInfo, &g_pData->m_aSprites[SPRITE_PART_BALL]);