diff --git a/pkgs/servers/nosql/influxdb/default.nix b/pkgs/servers/nosql/influxdb/default.nix
index 8b2c910dc191..08abc6ff864b 100644
--- a/pkgs/servers/nosql/influxdb/default.nix
+++ b/pkgs/servers/nosql/influxdb/default.nix
@@ -49,7 +49,7 @@ let
         mkdir -p $out/include $out/pkgconfig
         cp -r $NIX_BUILD_TOP/source/libflux/include/influxdata $out/include
         substitute $pkgcfgPath $out/pkgconfig/flux.pc \
-          --replace /out $out
+          --replace-fail /out $out
       ''
       + lib.optionalString stdenv.hostPlatform.isDarwin ''
         install_name_tool -id $out/lib/libflux.dylib $out/lib/libflux.dylib
diff --git a/pkgs/servers/nosql/influxdb2/default.nix b/pkgs/servers/nosql/influxdb2/default.nix
index 6cbb09ccdc2c..60d4ec2b917f 100644
--- a/pkgs/servers/nosql/influxdb2/default.nix
+++ b/pkgs/servers/nosql/influxdb2/default.nix
@@ -66,7 +66,7 @@ let
         mkdir -p $out/include $out/pkgconfig
         cp -r $NIX_BUILD_TOP/source/libflux/include/influxdata $out/include
         substitute $pkgcfgPath $out/pkgconfig/flux.pc \
-          --replace /out $out
+          --replace-fail /out $out
       ''
       + lib.optionalString stdenv.hostPlatform.isDarwin ''
         install_name_tool -id $out/lib/libflux.dylib $out/lib/libflux.dylib
@@ -95,7 +95,7 @@ buildGoModule {
   postPatch = ''
     # use go-bindata from environment
     substituteInPlace static/static.go \
-      --replace 'go run github.com/kevinburke/go-bindata/' ""
+      --replace-fail 'go run github.com/kevinburke/go-bindata/' ""
   '';
 
   # Check that libflux and the UI are at the right version, and embed