diff --git a/src/blinky.c b/src/blinky.c
index e61fcea..05f5a4f 100644
--- a/src/blinky.c
+++ b/src/blinky.c
@@ -213,7 +213,7 @@ int main(void)
     unsigned int nr_tim = 4;
 
     /* Relocate DATA. Initialise BSS. */
-    if (_sdat != _ldat)
+    if (&_sdat[0] != &_ldat[0])
         memcpy(_sdat, _ldat, _edat-_sdat);
     memset(_sbss, 0, _ebss-_sbss);
 
diff --git a/src/fw_update.c b/src/fw_update.c
index 60e9090..d9631cd 100644
--- a/src/fw_update.c
+++ b/src/fw_update.c
@@ -304,7 +304,7 @@ static bool_t enter_bootloader(void)
 int main(void)
 {
     /* Relocate DATA. Initialise BSS. */
-    if (_sdat != _ldat)
+    if (&_sdat[0] != &_ldat[0])
         memcpy(_sdat, _ldat, _edat-_sdat);
     memset(_sbss, 0, _ebss-_sbss);
 
diff --git a/src/main.c b/src/main.c
index 820533e..6f2becd 100644
--- a/src/main.c
+++ b/src/main.c
@@ -25,7 +25,7 @@ static void canary_check(void)
 int main(void)
 {
     /* Relocate DATA. Initialise BSS. */
-    if (_sdat != _ldat)
+    if (&_sdat[0] != &_ldat[0])
         memcpy(_sdat, _ldat, _edat-_sdat);
     memset(_sbss, 0, _ebss-_sbss);