diff --git a/src/memory/conspage.c b/src/memory/conspage.c
index bf3819c..3c32126 100644
--- a/src/memory/conspage.c
+++ b/src/memory/conspage.c
@@ -20,6 +20,8 @@
 #include "conspage.h"
 #include "debug.h"
 #include "dump.h"
+#include "stack.h"
+#include "vectorspace.h"
 
 /**
  * Flag indicating whether conspage initialisation has been done.
@@ -169,7 +171,18 @@ void free_cell( struct cons_pointer pointer ) {
             debug_printf( DEBUG_ALLOC,
                           L"About to free vector-space object at %ld\n",
                           cell->payload.vectorp.address );
-            //free( ( void * ) cell->payload.vectorp.address );
+            struct vector_space_object *vso = cell->payload.vectorp.address;
+
+            switch ( vso->header.tag.value ) {
+                case STACKFRAMETV:
+                free_stack_frame(get_stack_frame(pointer));
+                break;
+            }
+
+            free( ( void * ) cell->payload.vectorp.address );
+            debug_printf( DEBUG_ALLOC,
+                          L"Freed vector-space object at %ld\n",
+                          cell->payload.vectorp.address );
             break;
 
     }
diff --git a/src/memory/stack.c b/src/memory/stack.c
index f036402..da4c17d 100644
--- a/src/memory/stack.c
+++ b/src/memory/stack.c
@@ -222,14 +222,14 @@ void free_stack_frame( struct stack_frame *frame ) {
     /*
      * TODO: later, push it back on the stack-frame freelist
      */
+  debug_print(L"Entering free_stack_frame\n", DEBUG_ALLOC);
     for ( int i = 0; i < args_in_frame; i++ ) {
         dec_ref( frame->arg[i] );
     }
     if ( !nilp( frame->more ) ) {
         dec_ref( frame->more );
     }
-
-    free( frame );
+  debug_print(L"Leaving free_stack_frame\n", DEBUG_ALLOC);
 }
 
 
diff --git a/src/memory/vectorspace.c b/src/memory/vectorspace.c
index 3aef0f1..cf0b1d6 100644
--- a/src/memory/vectorspace.c
+++ b/src/memory/vectorspace.c
@@ -67,6 +67,7 @@ struct cons_pointer make_vso( char *tag, uint64_t payload_size ) {
     struct vector_space_object *vso = malloc( padded );
 
     if ( vso != NULL ) {
+        memset(vso, 0, padded);
         debug_printf( DEBUG_ALLOC,
                       L"make_vso: about to write tag '%s' into vso at %p\n",
                       tag, vso );