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-rw-r--r--src/mslot_class.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mslot_class.c b/src/mslot_class.c
index 2a482f18..9d54afee 100644
--- a/src/mslot_class.c
+++ b/src/mslot_class.c
@@ -239,7 +239,7 @@ int8_t find_free_tfi(uint32_t tfi_map)
return -1;
for (tfi = 0; tfi < 32; tfi++) {
- if (!(tfi_map & (1 << tfi)))
+ if (!(tfi_map & (((uint32_t)1) << tfi)))
return tfi;
}