diff --git a/platform/mbed_assert.c b/platform/mbed_assert.c
index 5ed490a110..0871bab9e9 100644
--- a/platform/mbed_assert.c
+++ b/platform/mbed_assert.c
@@ -23,7 +23,6 @@
 
 MBED_NORETURN void mbed_assert_internal(const char *expr, const char *file, int line)
 {
-    core_util_critical_section_enter();
     mbed_error(MBED_ERROR_ASSERTION_FAILED, expr, 0, file, line);
 }