diff --git a/pkgs/applications/editors/jupyter-kernels/xeus-cling/xeus-cling.nix b/pkgs/applications/editors/jupyter-kernels/xeus-cling/xeus-cling.nix
index 9202704a3555..af0c5cce88f3 100644
--- a/pkgs/applications/editors/jupyter-kernels/xeus-cling/xeus-cling.nix
+++ b/pkgs/applications/editors/jupyter-kernels/xeus-cling/xeus-cling.nix
@@ -88,11 +88,11 @@ clangStdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace src/xmagics/executable.cpp \
-      --replace "getDataLayout" "getDataLayoutString"
+      --replace-fail "getDataLayout" "getDataLayoutString"
     substituteInPlace src/xmagics/execution.cpp \
-      --replace "simplisticCastAs" "castAs"
+      --replace-fail "simplisticCastAs" "castAs"
     substituteInPlace src/xmime_internal.hpp \
-      --replace "code.str()" "code.str().str()"
+      --replace-fail "code.str()" "code.str().str()"
   '';
 
   dontStrip = debug;