diff --git a/src/template.c b/src/template.c
index 7aedc0b..040c18d 100644
--- a/src/template.c
+++ b/src/template.c
@@ -44,6 +44,8 @@ const char* ANSI_CLEAR = __ANSI_CLEAR_STRING;
 
 #define SEQUENTIAL_MODE `sequential_mode`
 #define BLOCK_SIZE_BYTES `block_size`
+#define MINIMUM_BLOCK_SIZE ((sizeof(SAMPLE_TYPE) + sizeof(uint8_t) - 1) /     \
+                            sizeof(uint8_t))
 
 #define FP_RETURN_TYPE `fp_return_type`
 #define PRECALCULATED_RATIO `precalculated_ratio`
@@ -53,6 +55,9 @@ const char* ANSI_CLEAR = __ANSI_CLEAR_STRING;
 #define unsigned_to_signed(x) (x - PCM_COEFFICIENT)
 #define signed_to_unsigned(x) (x + PCM_COEFFICIENT)
 
+#define STRINGIZE(x) #x
+#define INT2STR(x) STRINGIZE(x)
+
 // macros
 #define ALLOCATE_MEMORY(nmemb)                                                \
     SAMPLE_TYPE* buffer = malloc(                                             \
@@ -112,15 +117,24 @@ main(void)
 
 	printf(
 	  "\n"
-	  "Sample rate: %d Hz\n"
-	  "Channels: %d%s\n"
-	  "Bit depth: %ssigned %d-bit\n"
-	  "Duration: ",
-	  SAMPLE_RATE,
-	  CHANNELS,
-	  CHANNELS == 1 ? " (mono)" : (CHANNELS > 2 ? "" : " (stereo)"),
-	  IS_SIGNED ? "" : "un",
-	  BIT_DEPTH);
+	  "Sample rate: " INT2STR(SAMPLE_RATE) " Hz\n"
+	  "Channels: " INT2STR(CHANNELS)
+#if CHANNELS <= 2
+	    " ("
+# if CHANNELS == 2
+		"stereo"
+# else
+		"mono"
+# endif
+	    ")"
+#endif
+	    "\n"
+	  "Bit depth: "
+#if !IS_SIGNED
+	    "un"
+#endif
+	    "signed " INT2STR(BIT_DEPTH) "-bit\n"
+	  "Duration: ");
 
 	if (seconds > 0)
 		if (seconds >= 3600)
@@ -204,10 +218,8 @@ main(void)
 	size_t BLOCK_SIZE = BLOCK_SIZE_BYTES / (sizeof(SAMPLE_TYPE) /
 		sizeof(uint8_t));
 	if (BLOCK_SIZE < 1) {
-		printf("The block size %" PRIuMAX " is too small, should be at least "
-		       "%" PRIuMAX " bytes\n", (uintmax_t) BLOCK_SIZE_BYTES,
-		       (uintmax_t) ((sizeof(SAMPLE_TYPE) + sizeof(uint8_t) - 1) /
-		                     sizeof(uint8_t)));
+		printf("The block size " INT2STR(BLOCK_SIZE_BYTES) " is too small, "
+		       "should be at least %" PRIuMAX " bytes\n", MINIMUM_BLOCK_SIZE);
 		return EXIT_FAILURE;
 	}