diff --git a/src/posix-compat.c b/src/posix-compat.c
index 636c8a5..7a5d809 100644
--- a/src/posix-compat.c
+++ b/src/posix-compat.c
@@ -54,13 +54,13 @@ struct pipe_handle {
 
 #ifdef _WIN32
 # define CONTEXT_INIT { .ContextFlags = CONTEXT_FULL | CONTEXT_DEBUG_REGISTERS | CONTEXT_FLOATING_POINT }
-struct stack_info {
+struct region_info {
     char *ptr;
     char *base;
     size_t size;
 };
 
-static inline void get_stack_info(struct stack_info *stack) {
+static inline void get_memory_info(struct region_info *stack, struct region_info *heap) {
     CONTEXT context = CONTEXT_INIT;
     MEMORY_BASIC_INFORMATION mbi;
 
@@ -70,6 +70,13 @@ static inline void get_stack_info(struct stack_info *stack) {
     VirtualQuery(stack->ptr, &mbi, sizeof (mbi));
     stack->base = mbi.BaseAddress;
     stack->size = mbi.RegionSize;
+
+    void *ptr = malloc(1);
+    VirtualQuery(ptr, &mbi, sizeof (mbi));
+    heap->ptr  = NULL;
+    heap->base = mbi.BaseAddress;
+    heap->size = mbi.RegionSize;
+    free(ptr);
 }
 
 static jmp_buf g_jmp;
@@ -104,12 +111,19 @@ s_proc_handle *fork_process() {
     Register(ip, context) = (intptr_t) resume_child;
     SetThreadContext(info.hThread, &context);
 
-    // Copy stack
-    struct stack_info stack;
-    get_stack_info(&stack);
+    // Copy stack, heap
+    struct region_info stack;
+    struct region_info heap;
+    get_memory_info(&stack, &heap);
 
     VirtualAllocEx(info.hProcess, stack.base, stack.size, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
-    WriteProcessMemory(info.hProcess, stack.ptr, stack.ptr, stack.base + stack.size - stack.ptr, NULL);
+    WriteProcessMemory(info.hProcess, stack.base, stack.base, stack.size, NULL);
+
+    VirtualAllocEx(info.hProcess, heap.base, heap.size, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+    WriteProcessMemory(info.hProcess, heap.base, heap.base, heap.size, NULL);
+
+    // Copy jmp_buf
+    WriteProcessMemory(info.hProcess, &g_jmp, &g_jmp, sizeof (jmp_buf), NULL);
 
     ResumeThread(info.hThread);
     CloseHandle(info.hThread);