diff --git a/pkgs/expat/build.sh b/pkgs/expat/build.sh
index b4e241e..65456cb 100644
--- a/pkgs/expat/build.sh
+++ b/pkgs/expat/build.sh
@@ -4,7 +4,7 @@ bad=""
 ext="dev"
 
 fetch() {
-	pkgver_r = $(echo $pkgver | tr '.' '_')
+	pkgver_r=$(echo $pkgver | tr '.' '_')
 	curl -L https://github.com/libexpat/libexpat/releases/download/R_2_2_10/$pkgname-$pkgver.tar.xz -o $pkgname-$pkgver.tar.gz
 	tar -xf $pkgname-$pkgver.tar.gz
 }