diff --git a/include/coverage-32.h b/include/coverage-32.h
index 89c08cdf..f50e098b 100644
--- a/include/coverage-32.h
+++ b/include/coverage-32.h
@@ -17,6 +17,22 @@ inline u32 classify_word(u32 word) {
 
 }
 
+inline void classify_counts_mem(u32 *mem, u32 size) {
+
+  u32 i = (size >> 2);
+
+  while (i--) {
+
+    /* Optimize for sparse bitmaps. */
+
+    if (unlikely(*mem)) { *mem = classify_word(*mem); }
+
+    mem++;
+
+  }
+
+}
+
 void simplify_trace(afl_state_t *afl, u8 *bytes) {
 
   u32 *mem = (u32 *)bytes;
diff --git a/include/coverage-64.h b/include/coverage-64.h
index 5d2f6a57..e970da8b 100644
--- a/include/coverage-64.h
+++ b/include/coverage-64.h
@@ -72,7 +72,7 @@ inline void classify_counts(afl_forkserver_t *fsrv) {
 
 }
 
-inline static void classify_counts_mem(u64 *mem, u32 size) {
+inline void classify_counts_mem(u64 *mem, u32 size) {
 
   u32 i = (size >> 3);