diff --git a/CMakeLists.txt b/CMakeLists.txt
index cd39cd84..ccfa8687 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,7 +37,7 @@ add_definitions(-DIQ_TREE)
 # The version number.
 set (iqtree_VERSION_MAJOR 1)
 set (iqtree_VERSION_MINOR 3)
-set (iqtree_VERSION_PATCH 7) 
+set (iqtree_VERSION_PATCH 8) 
 
 set(BUILD_SHARED_LIBS OFF)
 
diff --git a/model/modelgtr.cpp b/model/modelgtr.cpp
index b55e20a4..64c1c75d 100644
--- a/model/modelgtr.cpp
+++ b/model/modelgtr.cpp
@@ -453,9 +453,9 @@ void ModelGTR::setBounds(double *lower_bound, double *upper_bound, bool *bound_c
 
 	if (freq_type == FREQ_ESTIMATE) {
 		for (i = ndim-num_states+2; i <= ndim; i++) {
-//            lower_bound[i] = MIN_FREQUENCY/state_freq[highest_freq_state];
+            lower_bound[i] = MIN_FREQUENCY/state_freq[highest_freq_state];
 //			upper_bound[i] = state_freq[highest_freq_state]/MIN_FREQUENCY;
-            lower_bound[i]  = MIN_FREQUENCY;
+//            lower_bound[i]  = MIN_FREQUENCY;
             upper_bound[i] = 100.0;
             bound_check[i] = false;
         }