diff --git a/Makefile b/Makefile
index becebdec5..927e3999a 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# Ensure GOBIN is not set during build so that promu is installed to the correct path
+unexport GOBIN
+
 GO           ?= go
 GOFMT        ?= $(GO)fmt
 FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))