diff --git a/GPU/Software/BinManager.cpp b/GPU/Software/BinManager.cpp
index 093d0acf93..ff54e81c1d 100644
--- a/GPU/Software/BinManager.cpp
+++ b/GPU/Software/BinManager.cpp
@@ -120,6 +120,8 @@ private:
 	const BinManager::BinStateQueue &states_;
 };
 
+constexpr int BinManager::MAX_POSSIBLE_TASKS;
+
 BinManager::BinManager() {
 	queueRange_.x1 = 0x7FFFFFFF;
 	queueRange_.y1 = 0x7FFFFFFF;