diff --git a/tests/lib/mem_blocks/src/main.c b/tests/lib/mem_blocks/src/main.c
index ea8c6f92c37..feac4d9b32e 100644
--- a/tests/lib/mem_blocks/src/main.c
+++ b/tests/lib/mem_blocks/src/main.c
@@ -12,7 +12,7 @@
 #include <sys/util.h>
 
 #define BLK_SZ     64
-#define NUM_BLOCKS 4
+#define NUM_BLOCKS 8
 
 SYS_MEM_BLOCKS_DEFINE(mem_block_01, BLK_SZ, NUM_BLOCKS, 4);