diff --git a/sci-libs/mathgl/mathgl-8.0.1-r1.ebuild b/sci-libs/mathgl/mathgl-8.0.1-r2.ebuild
similarity index 99%
rename from sci-libs/mathgl/mathgl-8.0.1-r1.ebuild
rename to sci-libs/mathgl/mathgl-8.0.1-r2.ebuild
index 96df3e08c15ac..53318c93823a8 100644
--- a/sci-libs/mathgl/mathgl-8.0.1-r1.ebuild
+++ b/sci-libs/mathgl/mathgl-8.0.1-r2.ebuild
@@ -24,7 +24,7 @@ unset l
 
 RDEPEND="
 	virtual/opengl
-	fltk? ( x11-libs/fltk:1 )
+	fltk? ( x11-libs/fltk:1= )
 	gif? ( media-libs/giflib )
 	glut? ( media-libs/freeglut )
 	gsl? ( >=sci-libs/gsl-2:= )