diff --git a/libsolidity/codegen/ContractCompiler.cpp b/libsolidity/codegen/ContractCompiler.cpp
index f42799064..9d6129a36 100644
--- a/libsolidity/codegen/ContractCompiler.cpp
+++ b/libsolidity/codegen/ContractCompiler.cpp
@@ -42,7 +42,7 @@ class StackHeightChecker
 public:
 	StackHeightChecker(CompilerContext const& _context):
 		m_context(_context), stackHeight(m_context.stackHeight()) {}
-	void check() { solAssert(m_context.stackHeight() == stackHeight, "I sense a disturbance in the stack. "); }
+	void check() { solAssert(m_context.stackHeight() == stackHeight, std::string("I sense a disturbance in the stack: ") + std::to_string(m_context.stackHeight()) + " vs " + std::to_string(stackHeight)); }
 private:
 	CompilerContext const& m_context;
 	unsigned stackHeight;