diff --git a/libc/arch-arm/syscalls.mk b/libc/arch-arm/syscalls.mk
index 62eda87..5cb46b5 100644
--- a/libc/arch-arm/syscalls.mk
+++ b/libc/arch-arm/syscalls.mk
@@ -150,6 +150,7 @@
 syscall_src += arch-arm/syscalls/__rt_sigprocmask.S
 syscall_src += arch-arm/syscalls/__rt_sigtimedwait.S
 syscall_src += arch-arm/syscalls/sigpending.S
+syscall_src += arch-arm/syscalls/signalfd4.S
 syscall_src += arch-arm/syscalls/socket.S
 syscall_src += arch-arm/syscalls/socketpair.S
 syscall_src += arch-arm/syscalls/bind.S
diff --git a/libc/arch-arm/syscalls/signalfd4.S b/libc/arch-arm/syscalls/signalfd4.S
new file mode 100644
index 0000000..1ec7055
--- /dev/null
+++ b/libc/arch-arm/syscalls/signalfd4.S
@@ -0,0 +1,14 @@
+/* autogenerated by gensyscalls.py */
+#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
+
+ENTRY(signalfd4)
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_signalfd4
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+END(signalfd4)