diff --git a/pkgs/build-support/go/module.nix b/pkgs/build-support/go/module.nix
index 3a3ae71de508..35bc2a0b42a2 100644
--- a/pkgs/build-support/go/module.nix
+++ b/pkgs/build-support/go/module.nix
@@ -130,7 +130,7 @@ in
 
       export GIT_SSL_CAINFO=$NIX_SSL_CERT_FILE
       ${if finalAttrs.proxyVendor then ''
-        mkdir -p "''${GOPATH}/pkg/mod/cache/download"
+        mkdir -p "$GOPATH/pkg/mod/cache/download"
         go mod download
       '' else ''
         if (( "''${NIX_DEBUG:-0}" >= 1 )); then
@@ -148,8 +148,8 @@ in
       runHook preInstall
 
       ${if finalAttrs.proxyVendor then ''
-        rm -rf "''${GOPATH}/pkg/mod/cache/download/sumdb"
-        cp -r --reflink=auto "''${GOPATH}/pkg/mod/cache/download" $out
+        rm -rf "$GOPATH/pkg/mod/cache/download/sumdb"
+        cp -r --reflink=auto "$GOPATH/pkg/mod/cache/download" $out
       '' else ''
         cp -r --reflink=auto vendor $out
       ''}