diff --git a/Makefile b/Makefile
index 15216d4..27837f9 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ export BUILD_VERSION ?= 1.21.0
 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 ?= sqlite,postgresql
 SRC := src