diff --git a/lib_com/options.h b/lib_com/options.h
index 82fbd67100488f04e1d6f4445c7b23aa73bf76e0..94f06101010eea882eef2871a6dbb1a03567591c 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -208,7 +208,7 @@
 #define FIX_1009_ISM_NONDIEGETIC_PANNING                /* FhG: issue #1009: use correct object buffer for ISM1 non-diegetic pan      */
 #define NONBE_FIX_1012_1013_JBM_FLUSH_BUFFER            /* FhG: issues #1012, 1013: JBM flush function uses wrong output buffer */
 #define FIX_998_UNUSED_FUNCTION                         /* FhG: issue 998: delete unused funtion ivas_dirac_dec_get_response_split_order */ 
-#define NONBE_FIX_1014_1015_1016_OSBA_JBM_STEREO              /* FhG: issues #1014, #1015, #1016: fix tc buffer info update in the discrete ism renderer */
+#define NONBE_FIX_1014_1015_1016_OSBA_JBM_STEREO             /* FhG: issues #1014, #1015, #1016: fix tc buffer info update in the discrete ism renderer */
 #define NONBE_FIX_987_PARAMC_BINAURAL_REVERB_RENDERING       /* FhG: issue 987: solution b: downmix HOA3 to stereo a input for the reverberator */
 
 /* #################### End BASOP porting switches ############################ */
diff --git a/lib_com/prot.h b/lib_com/prot.h
index 46fc826ed0dc6d313c28ec2b1fcd373387444483..943882b717df402926bfdac6d0dfeaba1a8f2360 100644
--- a/lib_com/prot.h
+++ b/lib_com/prot.h
@@ -160,13 +160,14 @@ int16_t sum_s(
     const int16_t *vec, /* i  : input vector                                    */
     const int16_t lvec  /* i  : length of input vector                          */
 );
-
+#ifdef DEBUGGING
 /*! r: sum of all vector elements */
 int32_t sum_l(
     const int32_t *vec, /* i  : input vector                                    */
     const int16_t lvec  /* i  : length of input vector                          */
 );
 
+#endif
 /*! r: sum of all vector elements */
 float sum_f(
     const float *vec,  /* i  : input vector                                    */
diff --git a/lib_com/tools.c b/lib_com/tools.c
index cdced9130218a0b0e12d6b792bd7ed0adc31c2fb..ca374507aab6067c7240571b4814a593ec90d922 100644
--- a/lib_com/tools.c
+++ b/lib_com/tools.c
@@ -138,6 +138,7 @@ int16_t sum_s(
     return tmp;
 }
 
+#ifdef DEBUGGING
 /*! r: sum of all vector elements */
 int32_t sum_l(
     const int32_t *vec, /* i  : input vector                          */
@@ -156,6 +157,7 @@ int32_t sum_l(
     return tmpL;
 }
 
+#endif
 /*! r: sum of all vector elements */
 float sum_f(
     const float *vec,  /* i  : input vector                          */