diff --git a/libs/ultrahdr/fuzzer/ultrahdr_enc_fuzzer.cpp b/libs/ultrahdr/fuzzer/ultrahdr_enc_fuzzer.cpp
index dca0c15..acb9b79 100644
--- a/libs/ultrahdr/fuzzer/ultrahdr_enc_fuzzer.cpp
+++ b/libs/ultrahdr/fuzzer/ultrahdr_enc_fuzzer.cpp
@@ -255,7 +255,7 @@
                         } else if (tf == ULTRAHDR_TF_PQ) {
                             metadata.maxContentBoost = kPqMaxNits / kSdrWhiteNits;
                         } else {
-                            metadata.maxContentBoost = 0;
+                            metadata.maxContentBoost = 1.0f;
                         }
                         metadata.minContentBoost = 1.0f;
                         status = jpegHdr.encodeJPEGR(&jpegImg, &jpegGainMap, &metadata, &jpegImgR);
diff --git a/libs/ultrahdr/jpegr.cpp b/libs/ultrahdr/jpegr.cpp
index 25197d6..415255d 100644
--- a/libs/ultrahdr/jpegr.cpp
+++ b/libs/ultrahdr/jpegr.cpp
@@ -733,7 +733,7 @@
   map_data.reset(reinterpret_cast<uint8_t*>(dest->data));
 
   ColorTransformFn hdrInvOetf = nullptr;
-  float hdr_white_nits = 0.0f;
+  float hdr_white_nits = kSdrWhiteNits;
   switch (hdr_tf) {
     case ULTRAHDR_TF_LINEAR:
       hdrInvOetf = identityConversion;
@@ -1074,6 +1074,12 @@
     return ERROR_JPEGR_INVALID_NULL_PTR;
   }
 
+  if (metadata->minContentBoost < 1.0f || metadata->maxContentBoost < metadata->minContentBoost) {
+    ALOGE("received bad value for content boost min %f, max %f", metadata->minContentBoost,
+           metadata->maxContentBoost);
+    return ERROR_JPEGR_INVALID_INPUT_TYPE;
+  }
+
   const string nameSpace = "http://ns.adobe.com/xap/1.0/";
   const int nameSpaceLength = nameSpace.size() + 1;  // need to count the null terminator