diff --git a/pkgs/build-support/rust/build-rust-crate.nix b/pkgs/build-support/rust/build-rust-crate.nix
index 75563e34c38..b07a09d6355 100644
--- a/pkgs/build-support/rust/build-rust-crate.nix
+++ b/pkgs/build-support/rust/build-rust-crate.nix
@@ -19,7 +19,7 @@ let makeDeps = dependencies:
       echo_build_heading() {
        start=""
        end=""
-       if [[ x"${colors}" = x"always" ]]; then
+       if [[ "${colors}" == "always" ]]; then
          start="$(printf '\033[0;1;32m')" #set bold, and set green.
          end="$(printf '\033[0m')" #returns to "normal"
        fi
@@ -34,7 +34,7 @@ let makeDeps = dependencies:
       noisily() {
         start=""
         end=""
-        if [[ x"${colors}" = x"always" ]]; then
+        if [[ "${colors}" == "always" ]]; then
           start="$(printf '\033[0;1;32m')" #set bold, and set green.
           end="$(printf '\033[0m')" #returns to "normal"
         fi
@@ -194,7 +194,7 @@ let makeDeps = dependencies:
       bold=""
       green=""
       boldgreen=""
-      if [[ "${colors}" = "always" ]]; then
+      if [[ "${colors}" == "always" ]]; then
         norm="$(printf '\033[0m')" #returns to "normal"
         bold="$(printf '\033[0;1m')" #set bold
         green="$(printf '\033[0;32m')" #set green