diff --git a/pkgs/development/interpreters/gnu-apl/default.nix b/pkgs/development/interpreters/gnu-apl/default.nix
index 9ae373ff7a81..abfa74bb67d3 100644
--- a/pkgs/development/interpreters/gnu-apl/default.nix
+++ b/pkgs/development/interpreters/gnu-apl/default.nix
@@ -17,6 +17,8 @@ stdenv.mkDerivation rec {
     "-Wno-error=class-memaccess"
     "-Wno-error=restrict"
     "-Wno-error=format-truncation"
+    # Needed with GCC 10
+    "-Wno-error=maybe-uninitialized"
    ]) ++ optional stdenv.cc.isClang "-Wno-error=null-dereference");
 
   patchPhase = lib.optionalString stdenv.isDarwin ''