diff --git a/README.markdown b/README.markdown
index eba57e1..135e8e5 100644
--- a/README.markdown
+++ b/README.markdown
@@ -25,11 +25,11 @@ Or if you have `git` installed, then just clone it:
 
     git clone https://github.com/creationix/nvm.git ~/.nvm
 
-To activate nvm, you need to source it from your bash shell
+To activate nvm, you need to source it from your shell:
 
     source ~/.nvm/nvm.sh
 
-I always add this line to my `~/.bashrc` or `~/.profile` file to have it automatically sourced upon login.
+I always add this line to my `~/.bashrc`, `~/.profile`, or `~/.zshrc` file to have it automatically sourced upon login.
 Often I also put in a line to use a specific version of node.
 
 ## Usage
diff --git a/nvm.sh b/nvm.sh
index 8639288..45ba6d8 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -407,6 +407,10 @@ nvm() {
       else
         PATH="$NVM_DIR/$VERSION/bin:$PATH"
       fi
+      if [ -z "$MANPATH" ]; then
+        MANPATH=$(manpath)
+      fi
+      MANPATH=${MANPATH#*$NVM_DIR/*/man:}
       if [[ $MANPATH == *$NVM_DIR/*/share/man* ]]; then
         MANPATH=${MANPATH%$NVM_DIR/*/share/man*}$NVM_DIR/$VERSION/share/man${MANPATH#*$NVM_DIR/*/share/man}
       else