diff --git a/include/internal/catch_fatal_condition.hpp b/include/internal/catch_fatal_condition.hpp

index 1dcd545..5f6ab19 100644

--- a/include/internal/catch_fatal_condition.hpp

+++ b/include/internal/catch_fatal_condition.hpp

@@ -136,7 +136,7 @@ namespace Catch {

         static bool isSet;

         static struct sigaction oldSigActions [sizeof(signalDefs)/sizeof(SignalDefs)];

         static stack_t oldSigStack;

-        static char altStackMem[SIGSTKSZ];

+        static char altStackMem[8192];

         static void handleSignal( int sig ) {

             std::string name = "<unknown signal>";

@@ -156,7 +156,7 @@ namespace Catch {

             isSet = true;

             stack_t sigStack;

             sigStack.ss_sp = altStackMem;

-            sigStack.ss_size = SIGSTKSZ;

+            sigStack.ss_size = 8192;

             sigStack.ss_flags = 0;

             sigaltstack(&sigStack, &oldSigStack);

             struct sigaction sa = { 0 };

@@ -188,7 +188,7 @@ namespace Catch {

     bool FatalConditionHandler::isSet = false;

     struct sigaction FatalConditionHandler::oldSigActions[sizeof(signalDefs)/sizeof(SignalDefs)] = {};

     stack_t FatalConditionHandler::oldSigStack = {};

-    char FatalConditionHandler::altStackMem[SIGSTKSZ] = {};

+    char FatalConditionHandler::altStackMem[8192] = {};

 } // namespace Catch