diff --git a/include/boost/unordered/detail/foa.hpp b/include/boost/unordered/detail/foa.hpp
index 92bffb5d..a88ab187 100644
--- a/include/boost/unordered/detail/foa.hpp
+++ b/include/boost/unordered/detail/foa.hpp
@@ -269,7 +269,7 @@ private:
     return at(N);
   }
 
-  alignas(16) __m128i m;
+  alignas(16) __m128i m=_mm_setzero_si128();
 };
 
 #elif defined(BOOST_UNORDERED_LITTLE_ENDIAN_NEON)
@@ -412,7 +412,7 @@ private:
     return at(N);
   }
 
-  alignas(16) int8x16_t m;
+  alignas(16) int8x16_t m=vdupq_n_s8(0);
 };
 
 #else /* non-SIMD */
@@ -577,7 +577,7 @@ private:
     return          y&0x7FFF;
   }
 
-  alignas(16) boost::uint64_t m[2];
+  alignas(16) boost::uint64_t m[2]={0,0};
 };
 
 #endif
@@ -1361,9 +1361,6 @@ public:
 
   void clear()noexcept
   {
-    alignas(group_type) static constexpr unsigned char
-    zero[sizeof(group_type)]={0,};
-
     auto p=arrays.elements;
     if(p){
       for(auto pg=arrays.groups,last=pg+arrays.groups_size_mask+1;
@@ -1374,7 +1371,7 @@ public:
           mask&=mask-1;
         }
         /* we wipe the entire metadata to reset the overflow byte as well */
-        *pg=*reinterpret_cast<const group_type*>(zero);
+        *pg=group_type();
       }
       arrays.groups[arrays.groups_size_mask].set_sentinel();
       size_=0;