diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index ba9ca1cc..1e126bf 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -123,6 +123,11 @@
 	return(getpid());
 }
 
+int os_getpgrp(void)
+{
+	return getpgrp();
+}
+
 int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len,
 		  int r, int w, int x)
 {