diff --git a/lib/vm-core b/lib/vm-core
index 34b9b3c3..19bc9b02 100644
--- a/lib/vm-core
+++ b/lib/vm-core
@@ -370,7 +370,7 @@ core::stopall(){
 core::start(){
     local _name="$1"
     local _iso="$2"
-    local _cpu _memory _disk _guest _loader _console _tmux_cmd
+    local _cpu _memory _disk _guest _loader _console _tmux_cmd _tmux_name
 
     [ -z "${_name}" ] && util::usage
 
@@ -416,7 +416,11 @@ core::start(){
     if [ -n "${VM_FOREGROUND}" ]; then
         $0 -f _run "${_name}" "${_iso}"
     elif [ "${_console}" = "tmux" ]; then
-        ${_tmux_cmd} new -ds "${_name}" $0 -f _run "${_name}" "${_iso}"
+        # can't have dots in tmux session :( (looks like it may use . to separate window.pane)
+        # use ~ which we don't normally allow
+        _tmux_name=$(echo "${_name}" | tr "." "~")
+
+        ${_tmux_cmd} new -ds "${_tmux_name}" $0 -f _run "${_name}" "${_iso}"
     else
         $0 _run "${_name}" "${_iso}" >/dev/null 2>&1 &
     fi
@@ -555,7 +559,7 @@ core::rename(){
 core::console(){
     local _name="$1"
     local _port="$2"
-    local _console _tmux _tmux_cmd
+    local _console _tmux _tmux_cmd _tmux_name
 
     [ -z "${_name}" ] && util::usage
 
@@ -581,7 +585,9 @@ core::console(){
             _tmux=$("${_tmux_cmd}" ls |grep "^${_name}:")
 
             if [ -n "${_tmux}" ]; then
-                ${_tmux_cmd} attach -t ${_name}
+                _tmux_name=$(echo "${_name}" | tr "." "~")
+
+                ${_tmux_cmd} attach -t ${_tmux_name}
                 exit
             fi
         fi
diff --git a/vm b/vm
index b9eb5727..88293f66 100644
--- a/vm
+++ b/vm
@@ -24,8 +24,8 @@
 # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-VERSION=1.1-p4
-VERSION_INT=101065
+VERSION=1.1-p5
+VERSION_INT=101066
 VERSION_BSD=$(uname -K)
 PATH=${PATH}:/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin:/usr/local/sbin