diff --git a/pkgs/by-name/sn/snis-unwrapped/package.nix b/pkgs/by-name/sn/snis-unwrapped/package.nix
index 24bab16c2084..51ac65f3f8d2 100644
--- a/pkgs/by-name/sn/snis-unwrapped/package.nix
+++ b/pkgs/by-name/sn/snis-unwrapped/package.nix
@@ -40,14 +40,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   postPatch = ''
     substituteInPlace Makefile \
-      --replace "OPUSARCHIVE=libopus.a" "OPUSARCHIVE=" \
-      --replace "-I./opus-1.3.1/include" "-I${libopus.dev}/include/opus"
+      --replace-fail "OPUSARCHIVE=libopus.a" "OPUSARCHIVE=" \
+      --replace-fail "-I./opus-1.3.1/include" "-I${libopus.dev}/include/opus"
     substituteInPlace snis_text_to_speech.sh \
-      --replace "pico2wave" "${sox}/bin/pico2wave" \
-      --replace "espeak" "${espeak-classic}/bin/espeak" \
-      --replace "play" "${sox}/bin/play" \
-      --replace "aplay" "${alsa-utils}/bin/aplay" \
-      --replace "/bin/rm" "${coreutils}/bin/rm"
+      --replace-fail "pico2wave" "${sox}/bin/pico2wave" \
+      --replace-fail "espeak" "${espeak-classic}/bin/espeak" \
+      --replace-fail "aplay" "${alsa-utils}/bin/aplay" \
+      --replace-fail "play" "${sox}/bin/play" \
+      --replace-fail "/bin/rm" "${coreutils}/bin/rm"
   '';
 
   nativeBuildInputs = [