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-rw-r--r--include/config.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/config.h b/include/config.h
index 7c75e9c9..ba62d4c6 100644
--- a/include/config.h
+++ b/include/config.h
@@ -380,7 +380,7 @@
    after changing this - otherwise, SEGVs may ensue. */
 
 #define MAP_SIZE_POW2 16
-#define MAP_SIZE (1 << MAP_SIZE_POW2)
+#define MAP_SIZE (1U << MAP_SIZE_POW2)
 
 /* Maximum allocator request size (keep well under INT_MAX): */