diff --git a/src/parser/ComponentRepeat.cpp b/src/parser/ComponentRepeat.cpp
index 7090459f..919dbccb 100644
--- a/src/parser/ComponentRepeat.cpp
+++ b/src/parser/ComponentRepeat.cpp
@@ -320,7 +320,7 @@ void ComponentRepeat::wireRepeats(GlushkovBuildState &bs) {
         }
     }
 
-    DEBUG_PRINTF("wiring up %d optional repeats\n", copies - m_min);
+    DEBUG_PRINTF("wiring up %u optional repeats\n", copies - m_min);
     for (u32 rep = MAX(m_min, 1); rep < copies; rep++) {
         vector<PositionInfo> lasts = m_lasts[rep - 1];
         if (rep != m_min) {
diff --git a/unit/internal/multi_bit_compress.cpp b/unit/internal/multi_bit_compress.cpp
index 14c3f480..e0ec475c 100644
--- a/unit/internal/multi_bit_compress.cpp
+++ b/unit/internal/multi_bit_compress.cpp
@@ -46,7 +46,7 @@ UNUSED
 static
 void mmbit_display(const u8 *bits, u32 total_bits) {
     for (u32 i = 0; i < mmbit_size(total_bits); i += 8) {
-        printf("block %d:", i / 8);
+        printf("block %u:", i / 8);
         for (s32 j = 7; j >= 0; j--) {
             u8 a = (*(bits + i + j));
             printf(" %02x", a);
@@ -72,7 +72,7 @@ UNUSED
 static
 void mmbit_display_comp(const u8 *bits, u32 comp_size) {
     for (u32 i = 0; i < comp_size; i += 8) {
-        printf("block %d:", i / 8);
+        printf("block %u:", i / 8);
         for (s32 j = 7; j >= 0; j--) {
             u8 a = (*(bits + i + j));
             printf(" %02x", a);