diff --git a/lldb/docs/use/map.rst b/lldb/docs/use/map.rst
--- a/lldb/docs/use/map.rst
+++ b/lldb/docs/use/map.rst
@@ -199,7 +199,7 @@
                <td class="content">
                </td>
                <td class="content">
-                  <b>(lldb)</b> process launch -v DEBUG=1
+                  <b>(lldb)</b> process launch -E DEBUG=1
                   <br>
                </td>
          </tr>
diff --git a/lldb/source/Commands/CommandOptionsProcessLaunch.cpp b/lldb/source/Commands/CommandOptionsProcessLaunch.cpp
--- a/lldb/source/Commands/CommandOptionsProcessLaunch.cpp
+++ b/lldb/source/Commands/CommandOptionsProcessLaunch.cpp
@@ -130,7 +130,7 @@
       launch_info.SetShell(HostInfo::GetDefaultShell());
     break;
 
-  case 'v':
+  case 'E':
     launch_info.GetEnvironment().insert(option_arg);
     break;
 
diff --git a/lldb/source/Commands/Options.td b/lldb/source/Commands/Options.td
--- a/lldb/source/Commands/Options.td
+++ b/lldb/source/Commands/Options.td
@@ -655,7 +655,7 @@
     Desc<"Set the current working directory to <path> when running the inferior.">;
   def process_launch_arch : Option<"arch", "a">, Arg<"Architecture">,
     Desc<"Set the architecture for the process to launch when ambiguous.">;
-  def process_launch_environment : Option<"environment", "v">,
+  def process_launch_environment : Option<"environment", "E">,
     Arg<"None">, Desc<"Specify an environment variable name/value string "
     "(--environment NAME=VALUE). Can be specified multiple times for subsequent "
     "environment entries.">;