diff --git a/jni/libopus/sources/silk/tuning_parameters.h b/jni/libopus/sources/silk/tuning_parameters.h
index a26de4d..e1057bb 100644
--- a/jni/libopus/sources/silk/tuning_parameters.h
+++ b/jni/libopus/sources/silk/tuning_parameters.h
@@ -8,11 +8,11 @@
 - Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.
-- Neither the name of Internet Society, IETF or IETF Trust, nor the 
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
 names of specific contributors, may be used to endorse or promote
 products derived from this software without specific prior written
 permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
@@ -50,7 +50,7 @@
 /* Linear prediction */
 /*********************/
 
-/* LPC analysis defines: regularization and bandwidth expansion */
+/* LPC analysis regularization */
 #define FIND_LPC_COND_FAC                               1e-5f
 
 /* LTP analysis defines */
@@ -63,6 +63,9 @@
 #define MU_LTP_QUANT_MB                                 0.025f
 #define MU_LTP_QUANT_WB                                 0.02f
 
+/* Max cumulative LTP gain */
+#define MAX_SUM_LOG_GAIN_DB								250.0f
+
 /***********************/
 /* High pass filtering */
 /***********************/