diff --git a/pkgs/development/libraries/mimalloc/default.nix b/pkgs/development/libraries/mimalloc/default.nix
index 2d38d7e539461d2..b3f63ec7e9b91d2 100644
--- a/pkgs/development/libraries/mimalloc/default.nix
+++ b/pkgs/development/libraries/mimalloc/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchFromGitHub, cmake, ninja
-, secureBuild ? true
+, secureBuild ? false
 }:
 
 let
@@ -25,17 +25,21 @@ stdenv.mkDerivation rec {
     mkdir -p $dev
     mv $out/lib/*/include $dev/include
 
-    # move everything else into place
-    mv $out/lib/mimalloc-1.0/libmimalloc*${soext}.1.0 $out/lib/libmimalloc${soext}
+    # move .a and .o files into place
     mv $out/lib/mimalloc-1.0/libmimalloc*.a           $out/lib/libmimalloc.a
     mv $out/lib/mimalloc-1.0/mimalloc*.o              $out/lib/mimalloc.o
 
+  '' + (if secureBuild then ''
+    mv $out/lib/mimalloc-1.0/libmimalloc-secure${soext}.1.0 $out/lib/libmimalloc-secure${soext}.1.0
+    ln -sfv $out/lib/libmimalloc-secure${soext}.1.0 $out/lib/libmimalloc-secure${soext}
+    ln -sfv $out/lib/libmimalloc-secure${soext}.1.0 $out/lib/libmimalloc${soext}
+  '' else ''
+    mv $out/lib/mimalloc-1.0/libmimalloc${soext}.1.0 $out/lib/libmimalloc${soext}.1.0
+    ln -sfv $out/lib/libmimalloc${soext}.1.0 $out/lib/libmimalloc${soext}
+  '') + ''
     # remote duplicate dir. FIXME: try to fix the .cmake file distribution
     # so we can re-use it for dependencies...
     rm -rf $out/lib/mimalloc-1.0
-  '' + stdenv.lib.optionalString secureBuild ''
-    # fix a broken symlink for the -secure alias
-    ln -sfv $out/lib/libmimalloc.so $out/lib/libmimalloc-secure.so
   '';
 
   outputs = [ "out" "dev" ];