diff --git a/Compiler/eigen/build b/Compiler/eigen/build
index 0bcac3b..40b2fec 100755
--- a/Compiler/eigen/build
+++ b/Compiler/eigen/build
@@ -5,7 +5,7 @@ pbuild::add_to_group 'Compiler'
 pbuild::set_download_url "https://gitlab.com/libeigen/$P/-/archive/${V_PKG}/$P-${V_PKG}.tar.bz2"
 
 pbuild::pre_configure(){
-        pbuild::add_configure_args "-DINCLUDE_INSTALL_DIR=${PREFIX}include"
+        pbuild::add_configure_args "-DINCLUDE_INSTALL_DIR=${PREFIX}/include"
 }
 
 pbuild::post_install(){