diff --git a/sci-biology/bowtie/bowtie-1.1.2.ebuild b/sci-biology/bowtie/bowtie-1.1.2.ebuild
index a4a8b5b4b8d4b..c39d7d437c6a0 100644
--- a/sci-biology/bowtie/bowtie-1.1.2.ebuild
+++ b/sci-biology/bowtie/bowtie-1.1.2.ebuild
@@ -12,7 +12,7 @@ SRC_URI="mirror://sourceforge/bowtie-bio/${P}-src.zip"
 
 LICENSE="Artistic"
 SLOT="1"
-KEYWORDS="~amd64 ~x86 ~x64-macos"
+KEYWORDS="amd64 ~x86 ~x64-macos"
 
 IUSE="examples +tbb"