diff --git a/pkgs/by-name/co/composefs/package.nix b/pkgs/by-name/co/composefs/package.nix
index e4580110c2e1..6d9e0eb45321 100644
--- a/pkgs/by-name/co/composefs/package.nix
+++ b/pkgs/by-name/co/composefs/package.nix
@@ -35,10 +35,18 @@ stdenv.mkDerivation (finalAttrs: {
   strictDeps = true;
   outputs = [ "out" "lib" "dev" ];
 
-  postPatch = lib.optionalString installExperimentalTools ''
-    substituteInPlace tools/meson.build \
-      --replace-fail "install : false" "install : true"
-  '';
+  postPatch =
+    # 'both_libraries' as an install target always builds both versions.
+    #  This results in double disk usage for normal builds and broken static builds,
+    #  so we replace it with the regular library target.
+    ''
+      substituteInPlace libcomposefs/meson.build \
+        --replace-fail "both_libraries" "library"
+    ''
+    + lib.optionalString installExperimentalTools ''
+      substituteInPlace tools/meson.build \
+        --replace-fail "install : false" "install : true"
+    '';
 
   nativeBuildInputs = [ meson ninja go-md2man pkg-config ];
   buildInputs = [ openssl ]