diff --git a/Documentation/ABI/testing/sysfs-module b/Documentation/ABI/testing/sysfs-module
index b9a29cd..0aac02e 100644
--- a/Documentation/ABI/testing/sysfs-module
+++ b/Documentation/ABI/testing/sysfs-module
@@ -49,4 +49,4 @@
 			O - out-of-tree module
 			F - force-loaded module
 			C - staging driver module
-			X - unsigned module
+			E - unsigned module
diff --git a/Documentation/module-signing.txt b/Documentation/module-signing.txt
index b6af42e..2429024 100644
--- a/Documentation/module-signing.txt
+++ b/Documentation/module-signing.txt
@@ -54,7 +54,7 @@
      If this is off (ie. "permissive"), then modules for which the key is not
      available and modules that are unsigned are permitted, but the kernel will
      be marked as being tainted, and the concerned modules will be marked as
-     tainted, shown with the character 'X'.
+     tainted, shown with the character 'E'.
 
      If this is on (ie. "restrictive"), only modules that have a valid
      signature that can be verified by a public key in the kernel's possession
diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt
index 879abe28..e315599 100644
--- a/Documentation/oops-tracing.txt
+++ b/Documentation/oops-tracing.txt
@@ -265,7 +265,7 @@
 
  13: 'O' if an externally-built ("out-of-tree") module has been loaded.
 
- 14: 'X' if an unsigned module has been loaded in a kernel supporting
+ 14: 'E' if an unsigned module has been loaded in a kernel supporting
      module signature.
 
 The primary reason for the 'Tainted: ' string is to tell kernel
diff --git a/kernel/module.c b/kernel/module.c
index c1acb0c..5806e09 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1014,7 +1014,7 @@
 	if (mod->taints & (1 << TAINT_CRAP))
 		buf[l++] = 'C';
 	if (mod->taints & (1 << TAINT_UNSIGNED_MODULE))
-		buf[l++] = 'X';
+		buf[l++] = 'E';
 	/*
 	 * TAINT_FORCED_RMMOD: could be added.
 	 * TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
diff --git a/kernel/panic.c b/kernel/panic.c
index 0e25fe1..02b6c9f0 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -210,7 +210,7 @@
 	{ TAINT_CRAP,			'C', ' ' },
 	{ TAINT_FIRMWARE_WORKAROUND,	'I', ' ' },
 	{ TAINT_OOT_MODULE,		'O', ' ' },
-	{ TAINT_UNSIGNED_MODULE,	'X', ' ' },
+	{ TAINT_UNSIGNED_MODULE,	'E', ' ' },
 };
 
 /**
@@ -229,7 +229,7 @@
  *  'C' - modules from drivers/staging are loaded.
  *  'I' - Working around severe firmware bug.
  *  'O' - Out-of-tree module has been loaded.
- *  'X' - Unsigned module has been loaded.
+ *  'E' - Unsigned module has been loaded.
  *
  *	The string is overwritten by the next call to print_tainted().
  */