diff --git a/autotests/write/format/jxr/Format_RGBA16FPx4_Premultiplied.jxr b/autotests/write/format/jxr/Format_RGBA16FPx4_Premultiplied.jxr
index 7fc8063..308b100 100644
Binary files a/autotests/write/format/jxr/Format_RGBA16FPx4_Premultiplied.jxr and b/autotests/write/format/jxr/Format_RGBA16FPx4_Premultiplied.jxr differ
diff --git a/src/imageformats/jxr.cpp b/src/imageformats/jxr.cpp
index 9367b4f..13264e4 100644
--- a/src/imageformats/jxr.cpp
+++ b/src/imageformats/jxr.cpp
@@ -457,7 +457,7 @@ public:
             << QImage::Format_Mono;
         // clang-format on
 
-        // To avoid complex code, I will save only inetger formats.
+        // To avoid complex code, I will save only integer formats.
         auto qi = source;
         if (qi.format() == QImage::Format_MonoLSB) {
             qi = qi.convertToFormat(QImage::Format_Mono);
@@ -468,6 +468,11 @@ public:
             else
                 qi = qi.convertToFormat(QImage::Format_RGBA8888);
         }
+#ifndef JXR_DENY_FLOAT_IMAGE
+        if (qi.format() == QImage::Format_RGBA16FPx4_Premultiplied) {
+            qi = qi.convertToFormat(QImage::Format_RGBA16FPx4);
+        }
+#endif // JXR_DENY_FLOAT_IMAGE
 
         // generic
         if (!valid.contains(qi.format())) {