diff --git a/include/mbedtls/error.h b/include/mbedtls/error.h
index 31f294f70..a52f9f5db 100644
--- a/include/mbedtls/error.h
+++ b/include/mbedtls/error.h
@@ -86,7 +86,7 @@
  * CHACHA20  3                  0x0051-0x0055
  * POLY1305  3                  0x0057-0x005B
  * CHACHAPOLY 2 0x0054-0x0056
- * PLATFORM  1  0x0070-0x0072
+ * PLATFORM  3  0x0070-0x0072   0x0071-0x0071
  *
  * High-level module nr (3 bits - 0x0...-0x7...)
  * Name      ID  Nr of Errors
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index 89fe8a7b1..82d5e3355 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -45,6 +45,7 @@
 
 #define MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED     -0x0070 /**< Hardware accelerator failed */
 #define MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED -0x0072 /**< The requested feature is not supported by the platform */
+#define MBEDTLS_ERR_PLATFORM_FAULT_DETECTED      -0x0071 /**< A fault was detected in a critical path, likely indicative of an active physical attack */
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/library/error.c b/library/error.c
index c993524fe..77c713374 100644
--- a/library/error.c
+++ b/library/error.c
@@ -841,6 +841,8 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
         mbedtls_snprintf( buf, buflen, "PLATFORM - Hardware accelerator failed" );
     if( use_ret == -(MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED) )
         mbedtls_snprintf( buf, buflen, "PLATFORM - The requested feature is not supported by the platform" );
+    if( use_ret == -(MBEDTLS_ERR_PLATFORM_FAULT_DETECTED) )
+        mbedtls_snprintf( buf, buflen, "PLATFORM - A fault was detected in a critical path, likely indicative of an active physical attack" );
 #endif /* MBEDTLS_PLATFORM_C */
 
 #if defined(MBEDTLS_POLY1305_C)