diff --git a/renderdoc/driver/gl/gl_resources.cpp b/renderdoc/driver/gl/gl_resources.cpp
index 94d79e945..075fbfe68 100644
--- a/renderdoc/driver/gl/gl_resources.cpp
+++ b/renderdoc/driver/gl/gl_resources.cpp
@@ -568,15 +568,6 @@ int GetNumMips(const GLHookSet &gl, GLenum target, GLuint tex, GLuint w, GLuint
 
 GLenum GetSizedFormat(const GLHookSet &gl, GLenum target, GLenum internalFormat, GLenum type)
 {
-  switch(type)
-  {
-    // some types imply a sized internalFormat
-    case eGL_UNSIGNED_SHORT_5_6_5: return eGL_RGB565;
-    case eGL_UNSIGNED_SHORT_4_4_4_4: return eGL_RGBA4;
-    case eGL_UNSIGNED_SHORT_5_5_5_1: return eGL_RGB5_A1;
-    default: break;
-  }
-
   switch(internalFormat)
   {
     // pick sized format ourselves for generic formats
@@ -604,6 +595,15 @@ GLenum GetSizedFormat(const GLHookSet &gl, GLenum target, GLenum internalFormat,
       return internalFormat;    // already explicitly sized
   }
 
+  switch(type)
+  {
+    // some types imply a sized internalFormat
+    case eGL_UNSIGNED_SHORT_5_6_5: return eGL_RGB565;
+    case eGL_UNSIGNED_SHORT_4_4_4_4: return eGL_RGBA4;
+    case eGL_UNSIGNED_SHORT_5_5_5_1: return eGL_RGB5_A1;
+    default: break;
+  }
+
   switch(target)
   {
     case eGL_TEXTURE_CUBE_MAP_POSITIVE_X: