diff --git a/lib_com/options.h b/lib_com/options.h
index 0814cb7e11feb58f1ce9dec4a9ba3a5cb31a20fc..8d8f4d3f12e560d276e40944b3930a1bc5ddc062 100755
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -153,7 +153,7 @@
 
 #define FIX_963_USAN_ERROR                              /* Eri: Issue 963: USAN error in Stereo CNG, division by zero */
 #define FIX_971_LOG2_IDX_GAIN_0                         /* VA: prevent -Inf due to log2(ratio==0) */
-#define FIX_966_VAR_OVERFLOW_IN_HARM_MODEL_ARI          /* FhG: fix and undef behaviour bug in the harmonic TCX model arithmetic coder */
+// #define FIX_966_VAR_OVERFLOW_IN_HARM_MODEL_ARI          /* FhG: fix and undef behaviour bug in the harmonic TCX model arithmetic coder */
 #define FIX_983_DISC_ISM_DIGEST_NUM_OBJS                /* FhG: issue #983: the discrete ISM digest function uses the wrong number of objects */
 
 /* #################### End BE switches ################################## */