diff --git a/src/jehanne/cmd/usyscalls/usyscalls.go b/src/jehanne/cmd/usyscalls/usyscalls.go
index 7db8d1f..a27ff26 100644
--- a/src/jehanne/cmd/usyscalls/usyscalls.go
+++ b/src/jehanne/cmd/usyscalls/usyscalls.go
@@ -185,6 +185,7 @@ func generateLibcCode(calls []SyscallConf){
 #include <u.h>
 
 {{ range .Wrappers }}
+#pragma weak {{ .Name }}
 {{ .RetType }}
 {{ .Name }}({{ .FuncArgs }})
 {
@@ -288,4 +289,4 @@ func main() {
 	
 	
 
-}
\ No newline at end of file
+}