diff --git a/utils/utils.c b/utils/utils.c
index 9bab73cc467e544cacc17ca7f89f41ced8cad3ce..fd406bc0da0127b0d687b96572470c568be6ee5c 100644
--- a/utils/utils.c
+++ b/utils/utils.c
@@ -28,7 +28,7 @@ double timestamp(void)
  */
 string_t markerName(string_t baseName, int n)
 {
-  string_t mark = (string_t) malloc( (strlen(baseName)+1) + ( (int) log10(n) + 1) + 1 );
+    string_t mark = (string_t) malloc( (strlen(baseName)+1) + numDigits(n) + 1 );
 
   sprintf(mark, "%s_%u", baseName,n);
 
diff --git a/utils/utils.h b/utils/utils.h
index 6e4dde80e696d77fafcdf1c795bb3582160c4bbc..09764d2e8a4886567220e89271be6c9d394331ea 100644
--- a/utils/utils.h
+++ b/utils/utils.h
@@ -14,6 +14,9 @@ typedef char * string_t;
 #define ALIGN_32 __attribute__((aligned(32)))
 #define ALIGN_16 __attribute__((aligned(16)))
 
+// Número máximo de dígitos em um número
+#define numDigits(n)  6  // ( (int) log10(n) + 1 )
+
 // Macro para verificar de valor 'n' é potência de 2 ou não
 #define isPot2(n) (n && !(n & (n - 1)))