diff --git a/platform/util/src/com/intellij/util/EnvironmentUtil.java b/platform/util/src/com/intellij/util/EnvironmentUtil.java
index e1a1042eb8c9..52a81aea9cfc 100644
--- a/platform/util/src/com/intellij/util/EnvironmentUtil.java
+++ b/platform/util/src/com/intellij/util/EnvironmentUtil.java
@@ -153,7 +153,7 @@ public class EnvironmentUtil {
   }
 
   private static final String DISABLE_OMZ_AUTO_UPDATE = "DISABLE_AUTO_UPDATE";
-  private static final String TMUX = "TMUX";
+  private static final String INTELLIJ_ENVIRONMENT_READER = "INTELLIJ_ENVIRONMENT_READER";
 
   private static Map<String, String> getShellEnv() throws Exception {
     return new ShellEnvReader().readShellEnv();
@@ -220,7 +220,7 @@ public class EnvironmentUtil {
       }
       if (workingDir != null) builder.directory(workingDir);
       builder.environment().put(DISABLE_OMZ_AUTO_UPDATE, "true");
-      builder.environment().put(TMUX, "disabled by IntelliJ");
+      builder.environment().put(INTELLIJ_ENVIRONMENT_READER, "true");
       Process process = builder.start();
       StreamGobbler gobbler = new StreamGobbler(process.getInputStream());
       int rv = waitAndTerminateAfter(process, SHELL_ENV_READING_TIMEOUT);
@@ -257,7 +257,7 @@ public class EnvironmentUtil {
 
   @NotNull
   private static Map<String, String> parseEnv(String text, String lineSeparator) throws Exception {
-    Set<String> toIgnore = new HashSet<String>(Arrays.asList("_", "PWD", "SHLVL", DISABLE_OMZ_AUTO_UPDATE, TMUX));
+    Set<String> toIgnore = new HashSet<String>(Arrays.asList("_", "PWD", "SHLVL", DISABLE_OMZ_AUTO_UPDATE, INTELLIJ_ENVIRONMENT_READER));
     Map<String, String> env = System.getenv();
     Map<String, String> newEnv = new HashMap<String, String>();