diff --git a/raster/r.stats/stats.c b/raster/r.stats/stats.c
index 66f67d49a28..6a27a12cf1f 100644
--- a/raster/r.stats/stats.c
+++ b/raster/r.stats/stats.c
@@ -23,14 +23,14 @@ struct Node {
     struct Node *left;
     struct Node *right;
     struct Node *list;
-    long count;
+    unsigned long long count;
     double area;
 };
 
 static struct Node **hashtable;
 static struct Node *node_list = NULL;
 static int node_count = 0;
-static long total_count = 0;
+static unsigned long long total_count = 0;
 
 int initialize_cell_stats(int n)
 {
@@ -200,7 +200,7 @@ static int node_compare(const void *pp, const void *qq)
 static int node_compare_count_asc(const void *pp, const void *qq)
 {
     struct Node *const *p = pp, *const *q = qq;
-    long a, b;
+    unsigned long long a, b;
 
     a = (*p)->count;
     b = (*q)->count;
@@ -213,7 +213,7 @@ static int node_compare_count_asc(const void *pp, const void *qq)
 static int node_compare_count_desc(const void *pp, const void *qq)
 {
     struct Node *const *p = pp, *const *q = qq;
-    long a, b;
+    unsigned long long a, b;
 
     a = (*p)->count;
     b = (*q)->count;
@@ -550,7 +550,8 @@ int print_cell_stats(char *fmt, int with_percents, int with_counts,
                     break;
                 case CSV:
                 case PLAIN:
-                    fprintf(stdout, "%s%ld", fs, (long)node->count);
+                    fprintf(stdout, "%s%llu", fs,
+                            (unsigned long long)node->count);
                     break;
                 }
             }