diff --git a/src/tags_int.cpp b/src/tags_int.cpp
index 1fb67e34..6df9adb9 100644
--- a/src/tags_int.cpp
+++ b/src/tags_int.cpp
@@ -2612,7 +2612,7 @@ std::ostream& print0x0007(std::ostream& os, const Value& value, const ExifData*)
     }
     std::ostringstream oss;
     oss.copyfmt(os);
-    const double t = 3600 * value.toFloat(0) + 60 * value.toFloat(1) + value.toFloat(2);
+    const double t = 3600.0 * value.toFloat(0) + 60.0 * value.toFloat(1) + value.toFloat(2);
     enforce<std::overflow_error>(std::isfinite(t), "Non-finite time value");
     int p = 0;
     const double fraction = std::fmod(t, 1);
diff --git a/test/data/test_reference_files/issue_1912_poc.jpg.out b/test/data/test_reference_files/issue_1912_poc.jpg.out
index 74e89b02..8cbd375e 100644
Binary files a/test/data/test_reference_files/issue_1912_poc.jpg.out and b/test/data/test_reference_files/issue_1912_poc.jpg.out differ