diff --git a/src/mapi/glapi/gen/NV_alpha_to_coverage_dither_control.xml b/src/mapi/glapi/gen/NV_alpha_to_coverage_dither_control.xml
index 0ddc7b83a5f..404bbfcf01f 100644
--- a/src/mapi/glapi/gen/NV_alpha_to_coverage_dither_control.xml
+++ b/src/mapi/glapi/gen/NV_alpha_to_coverage_dither_control.xml
@@ -11,7 +11,7 @@
 
     <enum name="ALPHA_TO_COVERAGE_DITHER_MODE_NV"                  value="0x92BF"/>
 
-    <function name="AlphaToCoverageDitherControlNV">
+    <function name="AlphaToCoverageDitherControlNV" no_error="true">
         <param name="mode" type="GLenum"/>
     </function>
 
diff --git a/src/mapi/glapi/gen/NV_copy_image.xml b/src/mapi/glapi/gen/NV_copy_image.xml
index 9fe144cde10..132a86fa191 100644
--- a/src/mapi/glapi/gen/NV_copy_image.xml
+++ b/src/mapi/glapi/gen/NV_copy_image.xml
@@ -4,7 +4,7 @@
 <OpenGLAPI>
 
 <category name="GL_NV_copy_image" number="376" no_error="true">
-    <function name="CopyImageSubDataNV">
+    <function name="CopyImageSubDataNV" no_error="true">
         <param name="srcName" type="GLuint"/>
         <param name="srcTarget" type="GLenum"/>
         <param name="srcLevel" type="GLint"/>