diff --git a/share/mk/doc.images.mk b/share/mk/doc.images.mk
index f72e948469..601240cda4 100644
--- a/share/mk/doc.images.mk
+++ b/share/mk/doc.images.mk
@@ -74,7 +74,7 @@ _IMAGES_PIC+= ${LOCAL_IMAGES_EN:M*.pic}
 IMAGES_GEN_PNG= ${_IMAGES_EPS:S/.eps$/.png/} ${_IMAGES_SCR:S/.scr$/.png/} ${_IMAGES_PIC:S/.pic$/.png/}
 IMAGES_GEN_EPS= ${_IMAGES_PNG:S/.png$/.eps/} ${_IMAGES_SCR:S/.scr$/.eps/} ${_IMAGES_PIC:S/.pic$/.eps/}
 
-CLEANFILES+= ${IMAGES_GEN_PNG} ${IMAGES_GEN_EPS}
+CLEANFILES+= ${IMAGES_GEN_PNG} ${IMAGES_GEN_EPS} ${_IMAGES_PIC:S/.pic$/.ps/}
 
 IMAGES_PNG= ${_IMAGES_PNG} ${IMAGES_GEN_PNG}
 IMAGES_EPS= ${_IMAGES_EPS} ${IMAGES_GEN_EPS}