diff --git a/tools/trace-malloc/spacecategory.c b/tools/trace-malloc/spacecategory.c
index 036d38c6fb9..6bab8a09c3a 100644
--- a/tools/trace-malloc/spacecategory.c
+++ b/tools/trace-malloc/spacecategory.c
@@ -64,13 +64,6 @@
 #include <gdfontmb.h>
 #endif /* HAVE_BOUTELL_GD */
 
-/*
-** Forward declarations
-**/
-#if defined(DEBUG_dp)
-extern void printCategoryTree(STCategoryNode* root);
-#endif
-
 /*
 ** AddRule
 **
@@ -594,14 +587,12 @@ PRBool freeNodeRunProcessor(void* clientData, STCategoryNode* node)
 PRBool printNodeProcessor(void* clientData, STCategoryNode* node)
 {
     STCategoryNode* root = (STCategoryNode*) clientData;
-    if (node->nchildren)
-        fprintf(stderr, "%-25s [%d children]\n", node->categoryName, node->nchildren);
-    else
-        fprintf(stderr, "%-25s [ %7d allocations, %7d size, %4.1f%% ]\n", node->categoryName,
-                node->run ? node->run->mStats.mCompositeCount:0,
-                node->run ? node->run->mStats.mSize:0,
-                node->run ? ((double)node->run->mStats.mSize / root->run->mStats.mSize * 100):0
-                );
+    fprintf(stderr, "%-25s [ %9s size", node->categoryName,
+            FormatNumber(node->run ? node->run->mStats.mSize:0));
+    fprintf(stderr, ", %5.1f%%",
+            node->run ? ((double)node->run->mStats.mSize / root->run->mStats.mSize * 100):0);
+    fprintf(stderr, ", %7s allocations ]\n",
+            FormatNumber(node->run ? node->run->mStats.mCompositeCount:0));
     return PR_TRUE;
 }