diff --git a/tests/e2e/scenarios/lib/common.sh b/tests/e2e/scenarios/lib/common.sh
index a0593bc2d3a47..6d2614d1e3b43 100644
--- a/tests/e2e/scenarios/lib/common.sh
+++ b/tests/e2e/scenarios/lib/common.sh
@@ -137,11 +137,17 @@ function kops-up() {
         create_args="${create_args} --discovery-store=${DISCOVERY_STORE}/${CLUSTER_NAME}/discovery"
     fi
 
+    # TODO: Switch scripts to use KOPS_CONTROL_PLANE_COUNT
+    if [[ -n "${KOPS_CONTROL_PLANE_SIZE:-}" ]]; then
+      echo "Recognized (deprecated) KOPS_CONTROL_PLANE_SIZE=${KOPS_CONTROL_PLANE_SIZE}, please set KOPS_CONTROL_PLANE_COUNT instead"
+      KOPS_CONTROL_PLANE_COUNT=${KOPS_CONTROL_PLANE_SIZE}
+    fi
+
     ${KUBETEST2} \
         --up \
         --kops-binary-path="${KOPS}" \
         --kubernetes-version="${K8S_VERSION}" \
         --create-args="${create_args}" \
-        --control-plane-size="${KOPS_CONTROL_PLANE_SIZE:-1}" \
+        --control-plane-count="${KOPS_CONTROL_PLANE_COUNT:-1}" \
         --template-path="${KOPS_TEMPLATE-}"
 }
\ No newline at end of file
diff --git a/tests/e2e/scenarios/upgrade-ab/run-test.sh b/tests/e2e/scenarios/upgrade-ab/run-test.sh
index c4162b50c5f33..98308da17ffd1 100755
--- a/tests/e2e/scenarios/upgrade-ab/run-test.sh
+++ b/tests/e2e/scenarios/upgrade-ab/run-test.sh
@@ -83,11 +83,17 @@ if [[ ${KOPS_IRSA-} = true ]]; then
   create_args="${create_args} --discovery-store=${DISCOVERY_STORE}/${CLUSTER_NAME}/discovery"
 fi
 
+# TODO: Switch scripts to use KOPS_CONTROL_PLANE_COUNT
+if [[ -n "${KOPS_CONTROL_PLANE_SIZE:-}" ]]; then
+  echo "Recognized (deprecated) KOPS_CONTROL_PLANE_SIZE=${KOPS_CONTROL_PLANE_SIZE}, please set KOPS_CONTROL_PLANE_COUNT instead"
+  KOPS_CONTROL_PLANE_COUNT=${KOPS_CONTROL_PLANE_SIZE}
+fi
+
 ${KUBETEST2} \
     --up \
     --kops-binary-path="${KOPS_A}" \
     --kubernetes-version="${K8S_VERSION_A}" \
-    --control-plane-count="${KOPS_CONTROL_PLANE_SIZE:-1}" \
+    --control-plane-count="${KOPS_CONTROL_PLANE_COUNT:-1}" \
     --template-path="${KOPS_TEMPLATE:-}" \
     --create-args="--networking calico ${KOPS_EXTRA_FLAGS:-} ${create_args}"