diff --git a/src/common/asserts.h b/src/common/asserts.h
index e96e57bb98..38440ce1b2 100644
--- a/src/common/asserts.h
+++ b/src/common/asserts.h
@@ -11,43 +11,50 @@
 
 // For overloading macros by argument count
 // See stackoverflow.com/questions/16683146/can-macros-be-overloaded-by-number-of-arguments
-#define OC_ASSERT_CAT(A, B) A##B
-#define OC_ASSERT_SELECT(NAME, NUM) OC_ASSERT_CAT(NAME##_, NUM)
-#define OC_ASSERT_GET_COUNT(_1, _2, _3, COUNT, ...) COUNT
-#define OC_ASSERT_VA_SIZE(...) OC_ASSERT_GET_COUNT(__VA_ARGS__, 3, 2, 1, 0)
+// Bugfix 08/09/2019: Broken arg expansion led to always collapsing to 1 arg (XXXX_1 overload result)
+// See also: https://stackoverflow.com/questions/9183993/msvc-variadic-macro-expansion
+#define OC_ASSERT_GLUE(x, y) x y
 
-#define OC_ASSERT_OVERLOAD(NAME, ...) OC_ASSERT_SELECT(NAME, OC_ASSERT_VA_SIZE(__VA_ARGS__)) \
-    (__VA_ARGS__)
+#define OC_ASSERT_GET_COUNT(_1, _2, _3, COUNT, ...) COUNT
+#define OC_ASSERT_EXPAND_ARGS(args) OC_ASSERT_GET_COUNT args
+#define OC_ASSERT_VA_SIZE(...) OC_ASSERT_EXPAND_ARGS((__VA_ARGS__, 3, 2, 1, 0))
+
+#define OC_ASSERT_SELECT2(NAME, COUNT) NAME##COUNT
+#define OC_ASSERT_SELECT1(NAME, COUNT) OC_ASSERT_SELECT2(NAME, COUNT)
+#define OC_ASSERT_SELECT(NAME, COUNT) OC_ASSERT_SELECT1(NAME, COUNT)
+
+#define OC_ASSERT_OVERLOAD(NAME, ...) OC_ASSERT_GLUE(OC_ASSERT_SELECT(NAME, OC_ASSERT_VA_SIZE(__VA_ARGS__)), \
+    (__VA_ARGS__))
 
 // Default assert: If the condition is false in debug builds, terminate.
 //
 // Prints a message on failure, even in release builds.
-#define ASSERT(...) OC_ASSERT_OVERLOAD(ASSERT, __VA_ARGS__)
-#define ASSERT_1(cond)                                                                  \
+#define ASSERT1(cond)                                                                  \
     if (!(cond)) {                                                                      \
         OC_ASSERT_MSG("ASSERT: \"%s\" in file %s, line %d", #cond, __FILE__, __LINE__); \
     } else {                                                                            \
     }
-#define ASSERT_2(cond, message)                                                                                   \
+#define ASSERT2(cond, message)                                                                                   \
     if (!(cond)) {                                                                                                \
         OC_ASSERT_MSG("ASSERT: \"%s\" in file %s, line %d with message: %s", #cond, __FILE__, __LINE__, message); \
     } else {                                                                                                      \
     }
+#define ASSERT(...) OC_ASSERT_OVERLOAD(ASSERT, __VA_ARGS__)
 
 // Enforce condition to be true, even in release builds.
 //
 // Prints 'message' and aborts execution if 'cond' is false.
-#define ENFORCE(...) OC_ASSERT_OVERLOAD(ENFORCE, __VA_ARGS__)
-#define ENFORCE_1(cond)                                                           \
+#define ENFORCE1(cond)                                                           \
     if (!(cond)) {                                                                \
         qFatal("ENFORCE: \"%s\" in file %s, line %d", #cond, __FILE__, __LINE__); \
     } else {                                                                      \
     }
-#define ENFORCE_2(cond, message)                                                                            \
+#define ENFORCE2(cond, message)                                                                            \
     if (!(cond)) {                                                                                          \
         qFatal("ENFORCE: \"%s\" in file %s, line %d with message: %s", #cond, __FILE__, __LINE__, message); \
     } else {                                                                                                \
     }
+#define ENFORCE(...) OC_ASSERT_OVERLOAD(ENFORCE, __VA_ARGS__)
 
 // An assert that is only present in debug builds: typically used for
 // asserts that are too expensive for release mode.