diff --git a/games-emulation/gnuboy/gnuboy-1.0.3-r2.ebuild b/games-emulation/gnuboy/gnuboy-1.0.3-r2.ebuild
index f48d05c93050b..9a20207a60e7b 100644
--- a/games-emulation/gnuboy/gnuboy-1.0.3-r2.ebuild
+++ b/games-emulation/gnuboy/gnuboy-1.0.3-r2.ebuild
@@ -27,6 +27,7 @@ PATCHES=(
 	"${FILESDIR}"/${P}-exec-stack.patch
 	"${FILESDIR}"/${P}-linux-headers.patch
 	"${FILESDIR}"/${P}-include.patch
+	"${FILESDIR}"/${P}-fix-implicit-decl-sprintf.patch
 )
 
 src_prepare() {