diff --git a/include/internal/catch_fatal_condition.cpp b/include/internal/catch_fatal_condition.cpp
index cea271f3..1eb6bb87 100644
--- a/include/internal/catch_fatal_condition.cpp
+++ b/include/internal/catch_fatal_condition.cpp
@@ -97,7 +97,7 @@ namespace Catch {
     
     // 32kb for the alternate stack seems to be sufficient. However, this value
     // is experimentally determined, so that's not guaranteed.
-    constexpr static std::size_t sigStackSize = 32768 >= MINSIGSTKSZ ? 32768 : MINSIGSTKSZ;
+    static constexpr std::size_t sigStackSize = 32768 >= MINSIGSTKSZ ? 32768 : MINSIGSTKSZ;
 
     static SignalDefs signalDefs[] = {
         { SIGINT,  "SIGINT - Terminal interrupt signal" },