diff --git a/vm/os-windows.cpp b/vm/os-windows.cpp
index 077bc48aa1..564b001e63 100644
--- a/vm/os-windows.cpp
+++ b/vm/os-windows.cpp
@@ -129,7 +129,12 @@ segment::~segment()
 		myvm->fatal_error("Segment deallocation failed",0);
 }
 
-long factor_vm::getpagesize()
+void factor_vm::sleep_micros(u64 usec)
+{
+	Sleep((DWORD)(usec / 1000));
+}
+
+long getpagesize()
 {
 	static long g_pagesize = 0;
 	if (! g_pagesize)
@@ -141,9 +146,4 @@ long factor_vm::getpagesize()
 	return g_pagesize;
 }
 
-void factor_vm::sleep_micros(u64 usec)
-{
-	Sleep((DWORD)(usec / 1000));
-}
-
 }
diff --git a/vm/os-windows.hpp b/vm/os-windows.hpp
index ea5e543d14..d1db3c26ac 100644
--- a/vm/os-windows.hpp
+++ b/vm/os-windows.hpp
@@ -45,5 +45,6 @@ inline static void init_signals() {}
 inline static void early_init() {}
 
 s64 current_micros();
+long getpagesize();
 
 }
diff --git a/vm/vm.hpp b/vm/vm.hpp
index d75c3e0eaf..937c043343 100644
--- a/vm/vm.hpp
+++ b/vm/vm.hpp
@@ -559,7 +559,6 @@ struct factor_vm : factor_vm_data {
 	// os-windows
   #if defined(WINDOWS)
 	void sleep_micros(u64 usec);
-	long getpagesize();
 	const vm_char *vm_executable_path();
 	const vm_char *default_image_path();
 	void windows_image_path(vm_char *full_path, vm_char *temp_path, unsigned int length);