diff --git a/pkgs/development/mobile/xcodeenv/simulate-app.nix b/pkgs/development/mobile/xcodeenv/simulate-app.nix
index 456732abe1f..e3eff458d27 100644
--- a/pkgs/development/mobile/xcodeenv/simulate-app.nix
+++ b/pkgs/development/mobile/xcodeenv/simulate-app.nix
@@ -2,14 +2,14 @@
 {name, app, device ? "iPhone", baseDir ? ""}:
 
 stdenv.mkDerivation {
-  inherit name;
+  name = stdenv.lib.replaceChars [" "] [""] name;
   buildCommand = ''
     ensureDir $out/bin
     cat > $out/bin/run-test-simulator << "EOF"
     #! ${stdenv.shell} -e
 
-    cd ${app}/${baseDir}/${name}.app
-    "$(readlink "${xcodewrapper}/bin/iPhone Simulator")" -SimulateApplication ./${name} -SimulateDevice '${device}'
+    cd '${app}/${baseDir}/${name}.app'
+    "$(readlink "${xcodewrapper}/bin/iPhone Simulator")" -SimulateApplication './${name}' -SimulateDevice '${device}'
     EOF
     chmod +x $out/bin/run-test-simulator
   '';