diff --git a/lib_com/options.h b/lib_com/options.h
index 2a7beaea749154fbe7848342ac463604eda6d7ed..c6aa559ff158b5055f687463e272f7a67cac6b3b 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -156,7 +156,7 @@
 #define FIX_890_ARRAY_SIZE                              /* Nokia: issue #890: mismatch in 2D array size declaration and use */
 #define BE_FIX_887_GCC_WARNING_ARRAY_SIZE               /* VoiceAge: Issue 887: change array size definition to avoid warning with gcc 11.4.0 */
 #define FIX_247_EXTERNAL_RENDERER_COMMAND_LINE          /* VA: issue 247: harmonize command-line options names of external renderer with the decoder */
-// #define FIX_643_PCA_OPTION                              /* VA: issue 643: rename PCA bypass command-line option */
+#define FIX_643_PCA_OPTION                              /* VA: issue 643: rename PCA bypass command-line option */
 
 /* #################### End BE switches ################################## */
 
diff --git a/tests/conftest.py b/tests/conftest.py
index e5851119822f29ddff5154079cd15e94e3ce313b..f51021a3dfcd6fac151cca2405524dde4a937ce7 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -240,7 +240,7 @@ class EncoderFrontend:
             command.extend(["-max_band", max_band])
 
         if pca:
-            command.extend(["-bypass", "2"])
+            command.extend(["-pca"])
 
         if quiet_mode:
             command.extend(["-q"])