diff --git a/src/arch/x86/linux/process.cc b/src/arch/x86/linux/process.cc
index 08137b943..f68f1c4c8 100644
--- a/src/arch/x86/linux/process.cc
+++ b/src/arch/x86/linux/process.cc
@@ -356,7 +356,7 @@ static SyscallDesc syscallDescs64[] = {
     /* 135 */ SyscallDesc("personality", unimplementedFunc),
     /* 136 */ SyscallDesc("ustat", unimplementedFunc),
     /* 137 */ SyscallDesc("statfs", unimplementedFunc),
-    /* 138 */ SyscallDesc("fstatfs", fstatfsFunc<X86Linux64>),
+    /* 138 */ SyscallDesc("fstatfs", unimplementedFunc),
     /* 139 */ SyscallDesc("sysfs", unimplementedFunc),
     /* 140 */ SyscallDesc("getpriority", unimplementedFunc),
     /* 141 */ SyscallDesc("setpriority", unimplementedFunc),
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index 906a01edb..7cce9e9c0 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -64,6 +64,7 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/uio.h>
+#include <unistd.h>
 
 #include <cerrno>
 #include <string>
@@ -1406,7 +1407,7 @@ pwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
     BufferArg bufArg(bufPtr, nbytes);
     bufArg.copyIn(tc->getMemProxy());
 
-    int bytes_written = pwrite64(sim_fd, bufArg.bufferPtr(), nbytes, offset);
+    int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset);
 
     return (bytes_written == -1) ? -errno : bytes_written;
 }