diff --git a/dlls/kernel/fiber.c b/dlls/kernel/fiber.c
index 475c8b5dcb6..a5514477133 100644
--- a/dlls/kernel/fiber.c
+++ b/dlls/kernel/fiber.c
@@ -39,7 +39,7 @@ struct fiber_data
     void                 *stack_base;        /* 08 top of fiber stack */
     void                 *stack_limit;       /* 0c fiber stack low-water mark */
     void                 *stack_allocation;  /* 10 base of the fiber stack allocation */
-    jmp_buf               jmpbuf;            /* 14 setjmp buffer (on Windows: CONTEXT) */
+    sigjmp_buf            jmpbuf;            /* 14 setjmp buffer (on Windows: CONTEXT) */
     DWORD                 flags;             /*    fiber flags */
     LPFIBER_START_ROUTINE start;             /*    start routine */
 };
@@ -185,7 +185,7 @@ void WINAPI SwitchToFiber( LPVOID fiber )
     /* stack_allocation and stack_base never change */
 
     /* FIXME: should save floating point context if requested in fiber->flags */
-    if (!setjmp( current_fiber->jmpbuf ))
+    if (!sigsetjmp( current_fiber->jmpbuf, 1 ))
     {
         NtCurrentTeb()->Tib.u.FiberData   = new_fiber;
         NtCurrentTeb()->Tib.ExceptionList = new_fiber->except;
@@ -195,6 +195,6 @@ void WINAPI SwitchToFiber( LPVOID fiber )
         if (new_fiber->start)  /* first time */
             wine_switch_to_stack( start_fiber, new_fiber, new_fiber->stack_base );
         else
-            longjmp( new_fiber->jmpbuf, 1 );
+            siglongjmp( new_fiber->jmpbuf, 1 );
     }
 }
diff --git a/dlls/ntdll/exception.c b/dlls/ntdll/exception.c
index 6a22c615e7c..22e57857ff7 100644
--- a/dlls/ntdll/exception.c
+++ b/dlls/ntdll/exception.c
@@ -394,7 +394,7 @@ DWORD __wine_exception_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION
 
     RtlUnwind( frame, 0, record, 0 );
     __wine_pop_frame( frame );
-    longjmp( wine_frame->jmp, 1 );
+    siglongjmp( wine_frame->jmp, 1 );
 }
 
 
diff --git a/include/wine/exception.h b/include/wine/exception.h
index 2b383a146af..0b82c3a0d9c 100644
--- a/include/wine/exception.h
+++ b/include/wine/exception.h
@@ -89,7 +89,7 @@
              __f.frame.Handler = __wine_exception_handler; \
              __f.u.filter = (func); \
              __wine_push_frame( &__f.frame ); \
-             if (setjmp( __f.jmp)) { \
+             if (sigsetjmp( __f.jmp, 1 )) { \
                  const __WINE_FRAME * const __eptr WINE_UNUSED = &__f; \
                  do {
 
@@ -135,7 +135,7 @@ typedef struct __tagWINE_FRAME
         /* finally data */
         __WINE_FINALLY finally_func;
     } u;
-    jmp_buf jmp;
+    sigjmp_buf jmp;
     /* hack to make GetExceptionCode() work in handler */
     DWORD ExceptionCode;
     const struct __tagWINE_FRAME *ExceptionRecord;