diff --git a/lib/libc/sparc64/fpu/fpu.c b/lib/libc/sparc64/fpu/fpu.c
index 7c8a3a967398..4e92788114d5 100644
--- a/lib/libc/sparc64/fpu/fpu.c
+++ b/lib/libc/sparc64/fpu/fpu.c
@@ -69,9 +69,12 @@ __FBSDID("$FreeBSD$");
 
 #include "namespace.h"
 #include <errno.h>
-#include <unistd.h>
 #include <signal.h>
+#ifdef FPU_DEBUG
+#include <stdio.h>
+#endif
 #include <stdlib.h>
+#include <unistd.h>
 #include "un-namespace.h"
 #include "libc_private.h"
 
diff --git a/lib/libc/sparc64/fpu/fpu_explode.c b/lib/libc/sparc64/fpu/fpu_explode.c
index 09cfd5a59bb0..12c8802f4358 100644
--- a/lib/libc/sparc64/fpu/fpu_explode.c
+++ b/lib/libc/sparc64/fpu/fpu_explode.c
@@ -49,6 +49,10 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 
+#ifdef FPU_DEBUG
+#include <stdio.h>
+#endif
+
 #include <machine/frame.h>
 #include <machine/fp.h>
 #include <machine/fsr.h>
diff --git a/lib/libc/sparc64/fpu/fpu_implode.c b/lib/libc/sparc64/fpu/fpu_implode.c
index 91e40c1c5671..82a8460b5dde 100644
--- a/lib/libc/sparc64/fpu/fpu_implode.c
+++ b/lib/libc/sparc64/fpu/fpu_implode.c
@@ -49,6 +49,10 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 
+#ifdef FPU_DEBUG
+#include <stdio.h>
+#endif
+
 #include <machine/frame.h>
 #include <machine/fp.h>
 #include <machine/fsr.h>