diff --git a/src/textures/multipatchtexture.cpp b/src/textures/multipatchtexture.cpp
index a765d2d41..f6b3f3302 100644
--- a/src/textures/multipatchtexture.cpp
+++ b/src/textures/multipatchtexture.cpp
@@ -1369,7 +1369,7 @@ void FMultiPatchTexture::ResolvePatches()
 		{
 			if (Parts[i].Texture == nullptr)
 			{
-				memcpy(&Parts[i], &Parts[i + 1], NumParts - i - 1);
+				memcpy(&Parts[i], &Parts[i + 1], (NumParts - i - 1) * sizeof(TexPart));
 				i--;
 				NumParts--;
 			}