diff --git a/include/blt/std/assert.h b/include/blt/std/assert.h
index 49cea36..45934d5 100644
--- a/include/blt/std/assert.h
+++ b/include/blt/std/assert.h
@@ -35,13 +35,13 @@ namespace blt
 }
 
 // prints error with stack trace if assertion fails. Does not stop execution.
-#define blt_assert(expr) static_cast<bool>(expr) ? void(0) : blt::b_assert_failed(#expr, __FILE__, __LINE__)
+#define blt_assert(expr) do {static_cast<bool>(expr) ? void(0) : blt::b_assert_failed(#expr, __FILE__, __LINE__) } while (0)
 // prints error with stack trace then exits with failure.
-#define BLT_ASSERT(expr) {static_cast<bool>(expr) ? void(0) : blt::b_assert_failed(#expr, __FILE__, __LINE__); std::exit(EXIT_FAILURE); }
+#define BLT_ASSERT(expr) do {static_cast<bool>(expr) ? void(0) : blt::b_assert_failed(#expr, __FILE__, __LINE__); std::exit(EXIT_FAILURE); } while (0)
 // prints as error but does not throw the exception.
-#define blt_throw(throwable) {blt::b_throw(throwable.what(), __FILE__, __LINE__);}
+#define blt_throw(throwable) do {blt::b_throw(throwable.what(), __FILE__, __LINE__);} while (0)
 // prints as error with stack trace and throws the exception.
-#define BLT_THROW(throwable) {blt::b_throw(throwable.what(), __FILE__, __LINE__); throw throwable;}
+#define BLT_THROW(throwable) do {blt::b_throw(throwable.what(), __FILE__, __LINE__); throw throwable;} while(0)
 
 
 #endif //BLT_ASSERT_H