diff --git a/env/common.c b/env/common.c
index 088b2ae..0db56e6 100644
--- a/env/common.c
+++ b/env/common.c
@@ -81,6 +81,7 @@
 		debug("Using default environment\n");
 	}
 
+	flags |= H_DEFAULT;
 	if (himport_r(&env_htab, (char *)default_environment,
 			sizeof(default_environment), '\0', flags, 0,
 			0, NULL) == 0)
@@ -99,7 +100,7 @@
 	 * Special use-case: import from default environment
 	 * (and use \0 as a separator)
 	 */
-	flags |= H_NOCLEAR;
+	flags |= H_NOCLEAR | H_DEFAULT;
 	return himport_r(&env_htab, (const char *)default_environment,
 				sizeof(default_environment), '\0',
 				flags, 0, nvars, vars);
diff --git a/include/search.h b/include/search.h
index bca36d3..c4b50c9 100644
--- a/include/search.h
+++ b/include/search.h
@@ -112,5 +112,6 @@
 #define H_MATCH_METHOD	(H_MATCH_IDENT | H_MATCH_SUBSTR | H_MATCH_REGEX)
 #define H_PROGRAMMATIC	(1 << 9) /* indicate that an import is from env_set() */
 #define H_ORIGIN_FLAGS	(H_INTERACTIVE | H_PROGRAMMATIC)
+#define H_DEFAULT	(1 << 10) /* indicate that an import is default env */
 
 #endif /* _SEARCH_H_ */