diff --git a/src/libperipherals/actuators.c b/src/libperipherals/actuators.c
index 0317394f6..1f9eaea0a 100644
--- a/src/libperipherals/actuators.c
+++ b/src/libperipherals/actuators.c
@@ -13,6 +13,8 @@
  * limitations under the License.
  */
 
+#pragma GCC optimize "O0"
+
 #include "actuators.h"
 #include "common-io.h"
 #include "jerry-libc.h"
diff --git a/src/libperipherals/common-io.c b/src/libperipherals/common-io.c
index 4f60fcac6..50361472e 100644
--- a/src/libperipherals/common-io.c
+++ b/src/libperipherals/common-io.c
@@ -13,6 +13,8 @@
  * limitations under the License.
  */
 
+#pragma GCC optimize "O0"
+
 #include "actuators.h"
 #include "common-io.h"
 #include "jerry-libc.h"
diff --git a/src/libperipherals/sensors.c b/src/libperipherals/sensors.c
index cf9458f35..671ecfb62 100644
--- a/src/libperipherals/sensors.c
+++ b/src/libperipherals/sensors.c
@@ -13,4 +13,6 @@
  * limitations under the License.
  */
 
+#pragma GCC optimize "O0"
+
 #include "sensors.h"