diff --git a/pages/common/jmap.md b/pages/common/jmap.md
index 660294a75..fbd81f242 100644
--- a/pages/common/jmap.md
+++ b/pages/common/jmap.md
@@ -1,6 +1,7 @@
 # jmap
 
 > Java Memory Map Tool.
+> More information: <https://docs.oracle.com/javase/7/docs/technotes/tools/share/jmap.html>.
 
 - Print shared object mappings for a Java process (output like pmap):