diff --git a/sci-mathematics/geogebra/geogebra-4.4.45.0.recipe b/sci-mathematics/geogebra/geogebra-4.4.45.0.recipe
index 0416eb563..5f0cb2d31 100644
--- a/sci-mathematics/geogebra/geogebra-4.4.45.0.recipe
+++ b/sci-mathematics/geogebra/geogebra-4.4.45.0.recipe
@@ -7,13 +7,13 @@ located in just about every country.
 GeoGebra has become the leading provider of dynamic mathematics software, supporting
 science, technology, engineering and mathematics (STEM) education and innovations in
 teaching and learning worldwide."
-HOMEPAGE="http://www.geogebra.org"
+HOMEPAGE="https://www.geogebra.org"
 COPYRIGHT="2017 International GeoGebra Institute"
 LICENSE="GNU GPL v3"
-REVISION="1"
-SOURCE_URI="http://download.geogebra.org/installers/4.4/GeoGebra-Linux-Portable-4.4.45.0.tar.bz2"
+REVISION="2"
+SOURCE_URI="https://download.geogebra.org/installers/4.4/GeoGebra-Linux-Portable-$portVersion.tar.bz2"
 CHECKSUM_SHA256="c75f28883ca2761664947e81433da00d534070126678672ed275d21af12fad7d"
-SOURCE_DIR="GeoGebra-Linux-Portable-4.4.45.0"
+SOURCE_DIR="GeoGebra-Linux-Portable-$portVersion"
 ADDITIONAL_FILES="geogebra.rdef"
 
 ARCHITECTURES="any"
@@ -31,6 +31,9 @@ REQUIRES="
 BUILD_REQUIRES="
 	haiku_devel
 	"
+BUILD_PREREQUIRES="
+	cmd:sed
+	"
 
 BUILD()
 {