diff --git a/science/chemtool/Portfile b/science/chemtool/Portfile
index 343f1afa48236..99f69ff7c9bf5 100644
--- a/science/chemtool/Portfile
+++ b/science/chemtool/Portfile
@@ -25,3 +25,9 @@ depends_lib         port:gtk2 \
                     port:fig2dev
 
 configure.args      --mandir=${prefix}/share/man
+
+# Upstream seems to be inactive. Latest version
+# is tagged 1.6.15 but the tarball remains the same
+# 1.6.14 (stable). Disabling livecheck to avoid any
+# false positives during port livecheck
+livecheck.type      none