diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 65e57efea55..e422ee771da 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,8 @@
+2019-08-21  Yannick Moy  <moy@adacore.com>
+
+	* checks.adb (Install_Null_Excluding_Check): Do not install
+	check in GNATprove mode.
+
 2019-08-21  Yannick Moy  <moy@adacore.com>
 
 	* sem_spark.adb (Process_Path): Do nothing on address of
diff --git a/gcc/ada/checks.adb b/gcc/ada/checks.adb
index 61cabedacb6..52b29fc9a3b 100644
--- a/gcc/ada/checks.adb
+++ b/gcc/ada/checks.adb
@@ -7964,6 +7964,12 @@ package body Checks is
          return;
       end if;
 
+      --  In GNATprove mode, we do not apply the check
+
+      if GNATprove_Mode then
+         return;
+      end if;
+
       --  Otherwise install access check
 
       Insert_Action (N,