diff --git a/src/libruntime/target/linux/deserializer.c b/src/libruntime/target/linux/deserializer.c
index 1056fc88b..8356015b7 100644
--- a/src/libruntime/target/linux/deserializer.c
+++ b/src/libruntime/target/linux/deserializer.c
@@ -46,7 +46,6 @@ int
 deserialize_num_by_id (uint8_t id)
 {
   uint16_t str_size, str_offset;
-  uint8_t *data;
 
   str_size = *bytecode_data;
   if (id < str_size)
@@ -58,7 +57,7 @@ deserialize_num_by_id (uint8_t id)
   if (num_data == NULL)
     {
       // Go to last string's offset
-      data = (uint8_t *) (bytecode_data + str_size * 2 - 1);
+      uint8_t *data = (uint8_t *) (bytecode_data + str_size * 2 - 1);
       str_offset = *((uint16_t *) data);
       data = bytecode_data + str_offset;
 
diff --git a/src/libruntime/target/stm32f4/deserializer.c b/src/libruntime/target/stm32f4/deserializer.c
index c6013a63a..a44b27f6f 100644
--- a/src/libruntime/target/stm32f4/deserializer.c
+++ b/src/libruntime/target/stm32f4/deserializer.c
@@ -48,7 +48,6 @@ int
 deserialize_num_by_id (uint8_t id)
 {
   uint16_t str_size, str_offset;
-  uint8_t *data;
 
   str_size = *bytecode_data;
   if (id < str_size)
@@ -60,7 +59,7 @@ deserialize_num_by_id (uint8_t id)
   if (num_data == NULL)
     {
       // Go to last string's offset
-      data = (uint8_t *) (bytecode_data + str_size * 2 - 1);
+      uint8_t *data = (uint8_t *) (bytecode_data + str_size * 2 - 1);
       str_offset = *((uint16_t *) data);
       data = bytecode_data + str_offset;