diff --git a/deskutils/calibre/Makefile b/deskutils/calibre/Makefile
index a9879d6e54d3..2675b4bc6c0d 100644
--- a/deskutils/calibre/Makefile
+++ b/deskutils/calibre/Makefile
@@ -53,6 +53,7 @@ USES=		desktop-file-utils gettext-runtime gl gnome localbase:ldflags \
 		pkgconfig pyqt:5 qt:5 shared-mime-info shebangfix \
 		ssl tar:xz xorg
 USE_RC_SUBR=	calibre
+SUB_LIST+=	PYTHON_VERSION=${PYTHON_VERSION}
 USE_PYQT=	core gui network sip svg webengine widgets xmlpatterns
 USE_QT=		buildtools_build core dbus gui qmake_build widgets
 USE_GL=		egl gl
diff --git a/deskutils/calibre/files/calibre.in b/deskutils/calibre/files/calibre.in
index 129337efe3bf..f93f5140e438 100644
--- a/deskutils/calibre/files/calibre.in
+++ b/deskutils/calibre/files/calibre.in
@@ -46,7 +46,7 @@ load_rc_config $name
 
 pidfile=/var/run/${name}/${name}.pid
 command=%%PREFIX%%/bin/calibre-server
-command_interpreter=%%LOCALBASE%%/bin/python2.7
+command_interpreter=%%LOCALBASE%%/bin/%%PYTHON_VERSION%%
 required_dirs=${calibre_library}
 
 start_precmd=calibre_prestart