diff --git a/sci-mathematics/arb/arb-2.17.0.ebuild b/sci-mathematics/arb/arb-2.17.0.ebuild
index b1298f379e34e..70ee466cd34f8 100644
--- a/sci-mathematics/arb/arb-2.17.0.ebuild
+++ b/sci-mathematics/arb/arb-2.17.0.ebuild
@@ -21,7 +21,7 @@ RDEPEND="
 
 DEPEND="${RDEPEND}"
 
-src_prepare(){
+src_prepare() {
 	default
 
 	# The autodetection finds "lib" first, which may e.g. contain 32-bit