diff --git a/core/alloc.c b/core/alloc.c
index 6a4f2c3..e9a8c7f 100644
--- a/core/alloc.c
+++ b/core/alloc.c
@@ -24,7 +24,7 @@ int allocInit(void)
                 pr_devel("Fail to allocBookSlab %d for slabDesc :( \n");
                 return ret;
         }
-        for (uint i = start; i < SLUB_SIZE; i++) {
+        for (uint i = start; i <= SLUB_SIZE; i++) {
                 if ((ret = allocBookSlab(1U << i, 0))) {
                         pr_devel("Fail to allocBookSlab %d for %d \n", ret, (1U << i));
                         return ret;
@@ -103,7 +103,7 @@ static void *allocFromSlab(struct slabDesc *slab)
 {
         vaddr_t *next = slab->freeEl;
         if (*next == (vaddr_t)NULL) {
-                pr_devel("Slab @%d for %d full\n", slab, slab->size);
+                pr_devel("Slab @%d for %d is now full\n", slab, slab->size);
                 slab->full = 1;
         } else {
                 slab->freeEl = (void *)(*next);
@@ -128,6 +128,10 @@ void *malloc(size_t size)
         int slabIdx;
         list_foreach(slubEntry, slab, slabIdx)
         {
+                if (slab->size > slubEntry->size){
+                        pr_devel("No more room in slub %d\n", slubIdx);
+                        break;
+                }
                 if (!slab->full) {
                         pr_devel("found place in slub %d at idx %d for size %d\n", slubIdx,
                                  slabIdx, size);
@@ -138,10 +142,11 @@ void *malloc(size_t size)
         // No room found
         struct slabDesc *newSlab;
         int ret;
-        if ((ret = addSlab(&newSlab, slab->size, IS_SELF_CONTAINED(slubEntry)))) {
+        if ((ret = addSlab(&newSlab, slubEntry->size, IS_SELF_CONTAINED(slubEntry)))) {
                 pr_devel("Fail to addSlab %d\n", ret);
                 return NULL;
         }
+        pr_devel("Allocate new slab for object of size %d\n", slubEntry->size);
         list_add_head(slubEntry, newSlab);
         return allocFromSlab(newSlab);
 }