diff --git a/qrenderdoc/Code/ScintillaSyntax.cpp b/qrenderdoc/Code/ScintillaSyntax.cpp
index f086c2270..10650eb1f 100644
--- a/qrenderdoc/Code/ScintillaSyntax.cpp
+++ b/qrenderdoc/Code/ScintillaSyntax.cpp
@@ -159,6 +159,8 @@ interpolateAtCentroid interpolateAtSample interpolateAtOffset EmitStreamVertex E
 EmitVertex EndPrimitive barrier memoryBarrier memoryBarrierAtomicCounter memoryBarrierBuffer
 memoryBarrierShared memoryBarrierImage groupMemoryBarrier
 
+debugPrintfEXT
+
 gl_CullDistance gl_FragCoord gl_FragDepth gl_FrontFacing gl_GlobalInvocationID gl_HelperInvocation
 gl_in gl_InstanceID gl_InvocationID gl_Layer gl_LocalInvocationID gl_LocalInvocationIndex
 gl_MaxPatchVertices gl_NumWorkGroups gl_out gl_PatchVerticesIn gl_PerVertex gl_PointCoord