diff --git a/tools/gl_stub/gls_norm.c b/tools/gl_stub/gls_norm.c
index e0a7a55ba..c5980439b 100644
--- a/tools/gl_stub/gls_norm.c
+++ b/tools/gl_stub/gls_norm.c
@@ -1959,3 +1959,8 @@ void
 norm_glViewport (GLint x, GLint y, GLsizei width, GLsizei height)
 {
 }
+
+void
+norm_glPNTrianglesiATI (GLint x, GLint y)
+{
+}
diff --git a/tools/gl_stub/gls_trace.c b/tools/gl_stub/gls_trace.c
index 97ffa8fcd..c878d656f 100644
--- a/tools/gl_stub/gls_trace.c
+++ b/tools/gl_stub/gls_trace.c
@@ -2337,3 +2337,8 @@ trace_glViewport (GLint x, GLint y, GLsizei width, GLsizei height)
 {
 	TRACE;
 }
+
+void
+trace_glPNTrianglesiATI (GLint x, GLint y)
+{
+}