diff --git a/README.md b/README.md
index e743a969..ef77c834 100644
--- a/README.md
+++ b/README.md
@@ -48,8 +48,8 @@ netlist data structures without duplicating them.
 * Query based incremental update of delays, arrival and required times
 * Simulator to propagate constants from constraints and netlist tie high/low
 
-See doc/OpenSTA.pdf for command documentiaton.
-See doc/StaApi.txt for timing engine API documentiaton.
+See doc/OpenSTA.pdf for command documentation.
+See doc/StaApi.txt for timing engine API documentation.
 See doc/ChangeLog.txt for changes to commands.
 
 OpenSTA is dual licensed. It is released under GPL v3 as OpenSTA and
diff --git a/tcl/Search.tcl b/tcl/Search.tcl
index 7b2a40ea..87d20af3 100644
--- a/tcl/Search.tcl
+++ b/tcl/Search.tcl
@@ -836,7 +836,7 @@ proc parse_rise_fall_arg { arg } {
   if { $arg eq "r" || $arg eq "^" || $arg eq "rise" } {
     return "rise"
   } elseif { $arg eq "f" || $arg eq "v" || $arg eq "fall" } {
-    retur "fall"
+    return "fall"
   } else {
     error "unknown rise/fall transition name."
   }