diff --git a/BAN/include/BAN/Assert.h b/BAN/include/BAN/Assert.h
index c313684b4..089e93d4a 100644
--- a/BAN/include/BAN/Assert.h
+++ b/BAN/include/BAN/Assert.h
@@ -5,5 +5,7 @@
 	#define ASSERT(cond) do { if (!(cond)) Kernel::panic("ASSERT("#cond") failed"); } while(false)
 	#define ASSERT_NOT_REACHED() Kernel::panic("ASSERT_NOT_REACHED() failed")
 #else
-	#error "NOT IMPLEMENTED"
+	#include <assert.h>
+	#define ASSERT(cond) assert((cond) && "ASSERT("#cond") failed")
+	#define ASSERT_NOT_REACHED() assert(false && "ASSERT_NOT_REACHED() failed")
 #endif
\ No newline at end of file
diff --git a/BAN/include/BAN/Errors.h b/BAN/include/BAN/Errors.h
index b18cbb9e4..2f5fa6961 100644
--- a/BAN/include/BAN/Errors.h
+++ b/BAN/include/BAN/Errors.h
@@ -10,7 +10,7 @@
 	#include <kernel/Panic.h>
 	#define MUST(expr)	({ auto e = expr; if (e.is_error()) Kernel::panic("{}", e.error()); e.release_value(); })
 #else
-	#error "NOT IMPLEMENTED"
+	#define MUST(expr)	({ auto e = expr; assert(!e.is_error()); e.release_value(); })
 #endif
 
 #define TRY(expr) ({ auto e = expr; if (e.is_error()) return e.release_error(); e.release_value(); })