diff --git a/src/arm.zig b/src/arm.zig
index b10f20d..89ea754 100644
--- a/src/arm.zig
+++ b/src/arm.zig
@@ -246,7 +246,7 @@ pub fn Arm32(comptime isa: Architecture) type {
                 if (address < 0x0000_0000 + self.itcm.virt.size)
                     return writeInt(T, self.itcm.buf[address & self.itcm.virt.mask ..][0..@sizeOf(T)], value);
 
-                if (dtcm_base < address and address < dtcm_base + dtcm_size)
+                if (dtcm_base <= address and address < dtcm_base + dtcm_size)
                     return writeInt(T, self.dtcm.buf[address & self.dtcm.virt.mask ..][0..@sizeOf(T)], value);
             }