diff --git a/src/arch/arm/semihosting.cc b/src/arch/arm/semihosting.cc
index 7711a86..a7a4d2a 100644
--- a/src/arch/arm/semihosting.cc
+++ b/src/arch/arm/semihosting.cc
@@ -581,10 +581,10 @@
     uint64_t heap_base, heap_limit, stack_base, stack_limit;
     gatherHeapInfo(tc, false, heap_base, heap_limit, stack_base, stack_limit);
 
-    std::array<uint32_t, 4> block = {
+    std::array<uint32_t, 4> block = {{
         (uint32_t)heap_base, (uint32_t)heap_limit,
         (uint32_t)stack_base, (uint32_t)stack_limit
-    };
+    }};
     portProxy(tc).write(block_addr, block, ArmISA::byteOrder(tc));
 
     return retOK(0);
@@ -596,9 +596,9 @@
     uint64_t heap_base, heap_limit, stack_base, stack_limit;
     gatherHeapInfo(tc, true, heap_base, heap_limit, stack_base, stack_limit);
 
-    std::array<uint64_t, 4> block = {
+    std::array<uint64_t, 4> block = {{
         heap_base, heap_limit, stack_base, stack_limit
-    };
+    }};
     portProxy(tc).write(block_addr, block, ArmISA::byteOrder(tc));
 
     return retOK(0);
diff --git a/src/sim/pseudo_inst.cc b/src/sim/pseudo_inst.cc
index b11a5a4..203afc0 100644
--- a/src/sim/pseudo_inst.cc
+++ b/src/sim/pseudo_inst.cc
@@ -285,7 +285,7 @@
     char key[len];
     memset(key, '\0', len);
 
-    std::array<uint64_t, 2> key_regs = { key_str1, key_str2 };
+    std::array<uint64_t, 2> key_regs = {{ key_str1, key_str2 }};
     key_regs = letoh(key_regs);
     memcpy(key, key_regs.data(), sizeof(key_regs));