diff --git a/gnat.adc b/gnat.adc
index 5a03406dad..5ebc91bd36 100644
--- a/gnat.adc
+++ b/gnat.adc
@@ -28,3 +28,7 @@ pragma Assertion_Policy
    Refined_Post         => Disable);
 pragma Overflow_Mode (General => Strict, Assertions => Eliminated);
 pragma SPARK_Mode (On);
+
+pragma Warnings
+  (GNAT, Off, """Side_Effects"" is not a valid aspect identifier",
+   Reason => """Side_Effects"" is new and needed for toolchain transition.");
diff --git a/src/drivers/intel/gma/gma.ads b/src/drivers/intel/gma/gma.ads
index d264960d2b..5cb45da8e7 100644
--- a/src/drivers/intel/gma/gma.ads
+++ b/src/drivers/intel/gma/gma.ads
@@ -11,6 +11,6 @@ package GMA is
       port     : in     Interfaces.C.int)
       return Interfaces.C.int
    with
-      Export, Convention => C, External_Name => "gma_read_edid";
+      Side_Effects, Export, Convention => C, External_Name => "gma_read_edid";
 
 end GMA;