diff --git a/pkgs/build-support/rust/hooks/cargo-check-hook.sh b/pkgs/build-support/rust/hooks/cargo-check-hook.sh
index f0339afb38fa..8a8e434f0ff6 100644
--- a/pkgs/build-support/rust/hooks/cargo-check-hook.sh
+++ b/pkgs/build-support/rust/hooks/cargo-check-hook.sh
@@ -16,11 +16,11 @@ cargoCheckHook() {
         threads=1
     fi
 
-    if [ "${cargoBuildType}" != "debug" ]; then
-        cargoBuildProfileFlag="--${cargoBuildType}"
+    if [ "${cargoCheckType}" != "debug" ]; then
+        cargoCheckProfileFlag="--${cargoCheckType}"
     fi
 
-    argstr="${cargoBuildProfileFlag} --target @rustTargetPlatformSpec@ --frozen ${cargoTestFlags}";
+    argstr="${cargoCheckProfileFlag} --target @rustTargetPlatformSpec@ --frozen ${cargoTestFlags}";
 
     (
         set -x