diff --git a/hw/xfree86/x86emu/ops2.c b/hw/xfree86/x86emu/ops2.c
index 6cd6b55c8f..848dc51971 100644
--- a/hw/xfree86/x86emu/ops2.c
+++ b/hw/xfree86/x86emu/ops2.c
@@ -2477,6 +2477,7 @@ x86emuOp2_bsf(u8 X86EMU_UNUSED(op2))
         }
         else {
             u16 *dec = DECODE_RM_WORD_REGISTER(rl);
+            (void)dec;
             assert(dec);
             u16 srcval = *DECODE_RM_WORD_REGISTER(rl);
             DECODE_PRINTF(",");
diff --git a/os/log.c b/os/log.c
index 82fc92e2e5..23b6c82932 100644
--- a/os/log.c
+++ b/os/log.c
@@ -268,7 +268,7 @@ LogInit(const char *fname, const char *backup)
 
         /* Flush saved log information. */
         if (saveBuffer && bufferSize > 0) {
-            write(logFileFd, saveBuffer, bufferPos);
+            (void)!write(logFileFd, saveBuffer, bufferPos);
             doLogSync();
         }
     }
@@ -602,10 +602,10 @@ LogSWrite(int verb, const char *buf, size_t len, Bool end_line)
 
                 localtime_r(&t, &tm);
                 strftime(fmt_tm, sizeof(fmt_tm) - 1, "[%Y-%m-%d %H:%M:%S] ", &tm);
-                write(logFileFd, fmt_tm, strlen(fmt_tm));
+                (void)!write(logFileFd, fmt_tm, strlen(fmt_tm));
             }
             newline = end_line;
-            write(logFileFd, buf, len);
+            (void)!write(logFileFd, buf, len);
             if (xorgLogSync)
                 doLogSync();
         }