diff --git a/gcc/ada/libgnat/system-linux-sparc.ads b/gcc/ada/libgnat/system-linux-sparc.ads
index cc502da3e5b..6d4ee380b2d 100644
--- a/gcc/ada/libgnat/system-linux-sparc.ads
+++ b/gcc/ada/libgnat/system-linux-sparc.ads
@@ -133,6 +133,7 @@ private
    Stack_Check_Probes        : constant Boolean := True;
    Stack_Check_Limits        : constant Boolean := False;
    Support_Aggregates        : constant Boolean := True;
+   Support_Atomic_Primitives : constant Boolean := True;
    Support_Composite_Assign  : constant Boolean := True;
    Support_Composite_Compare : constant Boolean := True;
    Support_Long_Shifts       : constant Boolean := True;