diff --git a/qemu/include/qemu/cutils.h b/qemu/include/qemu/cutils.h
index 4cf6bea6..ce7243a8 100644
--- a/qemu/include/qemu/cutils.h
+++ b/qemu/include/qemu/cutils.h
@@ -144,9 +144,9 @@ int qemu_strtou64(const char *nptr, const char **endptr, int base,
 #define QEMU_STRTOSZ_DEFSUFFIX_MB 'M'
 #define QEMU_STRTOSZ_DEFSUFFIX_KB 'K'
 #define QEMU_STRTOSZ_DEFSUFFIX_B 'B'
-int64_t qemu_strtosz(const char *nptr, char **end);
 int64_t qemu_strtosz_suffix(const char *nptr, char **end,
                             const char default_suffix);
+int64_t qemu_strtosz_MiB(const char *nptr, char **end);
 int64_t qemu_strtosz_metric(const char *nptr, char **end);
 
 #define K_BYTE     (1ULL << 10)
diff --git a/qemu/util/cutils.c b/qemu/util/cutils.c
index 1cbb749a..f44b4754 100644
--- a/qemu/util/cutils.c
+++ b/qemu/util/cutils.c
@@ -203,7 +203,7 @@ int64_t qemu_strtosz_suffix(const char *nptr, char **end,
     return do_strtosz(nptr, end, default_suffix, 1024);
 }
 
-int64_t qemu_strtosz(const char *nptr, char **end)
+int64_t qemu_strtosz_MiB(const char *nptr, char **end)
 {
     return qemu_strtosz_suffix(nptr, end, QEMU_STRTOSZ_DEFSUFFIX_MB);
 }