diff --git a/tests/line_test.cpp b/tests/line_test.cpp
index 947f95d744705..754d6b0fe49c8 100644
--- a/tests/line_test.cpp
+++ b/tests/line_test.cpp
@@ -1,3 +1,4 @@
+#include <inttypes.h>
 #include <time.h>
 #include <chrono>
 #include <cstdio>
@@ -332,14 +333,14 @@ static void line_to_comparison( const int iterations )
         const auto end2 = std::chrono::high_resolution_clock::now();
 
         if( iterations > 1 ) {
-            const int64_t diff1 =
+            const long long diff1 =
                 std::chrono::duration_cast<std::chrono::microseconds>( end1 - start1 ).count();
-            const int64_t diff2 =
+            const long long diff2 =
                 std::chrono::duration_cast<std::chrono::microseconds>( end2 - start2 ).count();
 
-            printf( "line_to() executed %d times in %ld microseconds.\n",
+            printf( "line_to() executed %d times in %lld microseconds.\n",
                     iterations, diff1 );
-            printf( "canonical_line_to() executed %d times in %ld microseconds.\n",
+            printf( "canonical_line_to() executed %d times in %lld microseconds.\n",
                     iterations, diff2 );
         }
     }
diff --git a/tests/map_memory.cpp b/tests/map_memory.cpp
index 77b054b701aaf..e8ad59d21d7a1 100644
--- a/tests/map_memory.cpp
+++ b/tests/map_memory.cpp
@@ -102,9 +102,9 @@ TEST_CASE( "lru_cache_perf", "[.]" )
         }
     }
     const auto end1 = std::chrono::high_resolution_clock::now();
-    const int64_t diff1 = std::chrono::duration_cast<std::chrono::microseconds>
-                          ( end1 - start1 ).count();
-    printf( "completed %d insertions in %ld microseconds.\n", max_size, diff1 );
+    const long long diff1 = std::chrono::duration_cast<std::chrono::microseconds>
+                            ( end1 - start1 ).count();
+    printf( "completed %d insertions in %lld microseconds.\n", max_size, diff1 );
     /*
      * Original tripoint hash    completed 1000000 insertions in 96136925 microseconds.
      * Table based interleave v1 completed 1000000 insertions in 41435604 microseconds.
diff --git a/tests/shadowcasting_test.cpp b/tests/shadowcasting_test.cpp
index 2ae3c5005d2f6..6571c6cf94084 100644
--- a/tests/shadowcasting_test.cpp
+++ b/tests/shadowcasting_test.cpp
@@ -256,13 +256,13 @@ static void shadowcasting_runoff( const int iterations, const bool test_bresenha
     const auto end2 = std::chrono::high_resolution_clock::now();
 
     if( iterations > 1 ) {
-        const int64_t diff1 = std::chrono::duration_cast<std::chrono::microseconds>
-                              ( end1 - start1 ).count();
-        const int64_t diff2 = std::chrono::duration_cast<std::chrono::microseconds>
-                              ( end2 - start2 ).count();
-        printf( "oldCastLight() executed %d times in %ld microseconds.\n",
+        const long long diff1 = std::chrono::duration_cast<std::chrono::microseconds>
+                                ( end1 - start1 ).count();
+        const long long diff2 = std::chrono::duration_cast<std::chrono::microseconds>
+                                ( end2 - start2 ).count();
+        printf( "oldCastLight() executed %d times in %lld microseconds.\n",
                 iterations, diff1 );
-        printf( "castLight() executed %d times in %ld microseconds.\n",
+        printf( "castLight() executed %d times in %lld microseconds.\n",
                 iterations, diff2 );
     }
 
@@ -318,15 +318,15 @@ static void shadowcasting_float_quad(
     const auto end2 = std::chrono::high_resolution_clock::now();
 
     if( iterations > 1 ) {
-        const int64_t diff1 = std::chrono::duration_cast<std::chrono::microseconds>
-                              ( end1 - start1 ).count();
-        const int64_t diff2 = std::chrono::duration_cast<std::chrono::microseconds>
-                              ( end2 - start2 ).count();
+        const long long diff1 = std::chrono::duration_cast<std::chrono::microseconds>
+                                ( end1 - start1 ).count();
+        const long long diff2 = std::chrono::duration_cast<std::chrono::microseconds>
+                                ( end2 - start2 ).count();
         printf( "castLight on four_quadrants (denominator %u) "
-                "executed %d times in %ld microseconds.\n",
+                "executed %d times in %lld microseconds.\n",
                 denominator, iterations, diff1 );
         printf( "castLight on floats (denominator %u) "
-                "executed %d times in %ld microseconds.\n",
+                "executed %d times in %lld microseconds.\n",
                 denominator, iterations, diff2 );
     }
 
@@ -383,13 +383,13 @@ static void shadowcasting_3d_2d( const int iterations )
     const auto end2 = std::chrono::high_resolution_clock::now();
 
     if( iterations > 1 ) {
-        const int64_t diff1 =
+        const long long diff1 =
             std::chrono::duration_cast<std::chrono::microseconds>( end1 - start1 ).count();
-        const int64_t diff2 =
+        const long long diff2 =
             std::chrono::duration_cast<std::chrono::microseconds>( end2 - start2 ).count();
-        printf( "castLight() executed %d times in %ld microseconds.\n",
+        printf( "castLight() executed %d times in %lld microseconds.\n",
                 iterations, diff1 );
-        printf( "cast_zlight() executed %d times in %ld microseconds.\n",
+        printf( "cast_zlight() executed %d times in %lld microseconds.\n",
                 iterations, diff2 );
         printf( "new/old execution time ratio: %.02f.\n", static_cast<double>( diff2 ) / diff1 );
     }