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-rw-r--r--os/common/oslib/include/chheap.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/os/common/oslib/include/chheap.h b/os/common/oslib/include/chheap.h
index 64840a0c7..db8b70269 100644
--- a/os/common/oslib/include/chheap.h
+++ b/os/common/oslib/include/chheap.h
@@ -39,9 +39,9 @@
* @note Cannot use the sizeof operator in this macro.
*/
#if (SIZEOF_PTR == 4) || defined(__DOXYGEN__)
-#define CH_HEAP_ALIGNMENT 8
+#define CH_HEAP_ALIGNMENT 8U
#elif (SIZEOF_PTR == 2)
-#define CH_HEAP_ALIGNMENT 4
+#define CH_HEAP_ALIGNMENT 4U
#else
#error "unsupported pointer size"
#endif