diff --git a/src/linker/base_ext/base_bit_array.c b/src/linker/base_ext/base_bit_array.c
index 3cb4f7c4..ddfe197f 100644
--- a/src/linker/base_ext/base_bit_array.c
+++ b/src/linker/base_ext/base_bit_array.c
@@ -41,7 +41,7 @@ bit_array_get_bit32(U32Array bit_array, U64 idx)
   Assert(idx < bit_array.count*32);
   U64 word_idx = idx / 32;
   U64 bit_idx = idx % 32;
-  U32 bit = (bit_array.v[word_idx] & (1 << bit_idx)) >> bit_idx;
+  U32 bit = (bit_array.v[word_idx] & (1u << bit_idx)) >> bit_idx;
   return bit;
 }
 
diff --git a/src/linker/base_ext/base_bit_array.h b/src/linker/base_ext/base_bit_array.h
index 5c76ef32..b54483ee 100644
--- a/src/linker/base_ext/base_bit_array.h
+++ b/src/linker/base_ext/base_bit_array.h
@@ -3,7 +3,7 @@
 
 #pragma once
 
-internal U32Array  bit_array_init32              (Arena *arena, U64 word_count);
+internal U32Array  bit_array_init32              (Arena *arena, U64 bit_count);
 internal U64       bit_array_scan_left_to_right32(U32Array bit_array, U64 lo, U64 hi, B32 state);
 internal U64       bit_array_scan_right_to_left32(U32Array bit_array, U64 lo, U64 hi, B32 state);
 internal void      bit_array_set_bit32           (U32Array bit_array, U64 idx, B32 state);