diff --git a/vvp/codes.cc b/vvp/codes.cc
index 52ed21e80..bb8bc8b27 100644
--- a/vvp/codes.cc
+++ b/vvp/codes.cc
@@ -46,8 +46,7 @@ static unsigned current_within_chunk = 0;
 void codespace_init(void)
 {
       assert(current_chunk == 0);
-	/* Value-initialize so unused slots are not random (opcode NULL). */
-      first_chunk = new struct vvp_code_s [code_chunk_size]();
+      first_chunk = new struct vvp_code_s [code_chunk_size];
       current_chunk = first_chunk;
 
       current_chunk[0].opcode = &of_ZOMBIE;
@@ -65,7 +64,7 @@ vvp_code_t codespace_next(void)
 {
       if (current_within_chunk == (code_chunk_size-1)) {
 	    current_chunk[code_chunk_size-1].cptr
-		  = new struct vvp_code_s [code_chunk_size]();
+		  = new struct vvp_code_s [code_chunk_size];
 	    current_chunk = current_chunk[code_chunk_size-1].cptr;
 
 	      /* Put a link opcode on the end of the chunk. */
diff --git a/vvp/vthread.cc b/vvp/vthread.cc
index aefde9e02..8170c2d17 100644
--- a/vvp/vthread.cc
+++ b/vvp/vthread.cc
@@ -770,15 +770,9 @@ vthread_t vthread_new(vvp_code_t pc, __vpiScope*scope)
       thr->flags[1] = BIT4_1;
       thr->flags[2] = BIT4_X;
       thr->flags[3] = BIT4_Z;
-	/* Initialize the remaining flags. Older code only cleared 4..7; the
-	   codegen freely uses higher flag indices, so leave nothing
-	   uninitialized for tools like valgrind. */
-      for (int idx = 4 ; idx < vthread_s::FLAGS_COUNT ; idx += 1)
+      for (int idx = 4 ; idx < 8 ; idx += 1)
 	    thr->flags[idx] = BIT4_X;
 
-      for (int idx = 0 ; idx < vthread_s::WORDS_COUNT ; idx += 1)
-	    thr->words[idx].w_uint = 0;
-
       scope->threads .insert(thr);
       return thr;
 }