diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index 1a438f6400aa..7299b8ca8d8f 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -717,7 +717,10 @@ lib.makeScope pkgs.newScope (
             }
             { name = "sysvmsg"; }
             { name = "sysvsem"; }
-            { name = "sysvshm"; }
+            {
+              name = "sysvshm";
+              configureFlags = [ "CFLAGS=-std=gnu17" ];
+            }
             {
               name = "tidy";
               configureFlags = [ "--with-tidy=${html-tidy}" ];