diff --git a/arch/x86/um/os-Linux/mcontext.c b/arch/x86/um/os-Linux/mcontext.c
index a21403df6663..b1580df80b3f 100644
--- a/arch/x86/um/os-Linux/mcontext.c
+++ b/arch/x86/um/os-Linux/mcontext.c
@@ -4,7 +4,13 @@
 #include <linux/string.h>
 #include <sys/ucontext.h>
 #include <asm/ptrace.h>
+/*
+ * musl defines struct sigcontext in <bits/signal.h>.  Rename the kernel's
+ * copy to avoid redefinition while keeping the FP-state types available.
+ */
+#define sigcontext __kernel_sigcontext
 #include <asm/sigcontext.h>
+#undef sigcontext
 #include <sysdep/ptrace.h>
 #include <sysdep/mcontext.h>
 #include <arch.h>