diff --git a/Makefile b/Makefile
index 1130b8f..18d8d9e 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ export BUILD_VERSION ?= 1.15.0
 export DEBIAN_FRONTEND ?= noninteractive
 export LANG ?= C.UTF-8
 export TZ ?= UTC
-export RUSTFLAGS ?= '-C link-arg=-s'
+export RUSTFLAGS ?= "-C link-arg=-s"
 DB ?= postgresql
 SRC := src