diff --git a/Makefile b/Makefile
index 48c102c6ab77c320ca893b47c94ade5998c41580..b2a42917c44210b4e25734c2779afa4077ceaecc 100644
--- a/Makefile
+++ b/Makefile
@@ -169,7 +169,7 @@ DEPS = $(addprefix $(OBJDIR)/,$(SRCS_LIBCOM:.c=.P) $(SRCS_LIBDEBUG:.c=.P) $(SRCS
 
 .PHONY: all clean
 
-all: $(CLI_APIENC) $(CLI_APIDEC) $(CLI_APIREND) $(CLI_APIPOSTREND)
+all: $(CLI_APIENC) $(CLI_APIDEC) $(CLI_APIREND) $(CLI_APIPOSTREND) $(CLI_AMBICONVERT)
 
 $(OBJDIR):
 	$(QUIET)mkdir -p $(OBJDIR)
diff --git a/apps/ambi_converter.c b/apps/ambi_converter.c
index ea880d26a95507365b016dcc7910b18e89412a56..b3fbf857067bf5a16cfdb3cab64997bfea9208b4 100644
--- a/apps/ambi_converter.c
+++ b/apps/ambi_converter.c
@@ -78,8 +78,8 @@ int main( int argc, char *argv[] )
     if ( argc != 5 )
     {
         printf( "----------------------------------------------------------------------------------\n" );
-        printf( "Usage:\n" );
-        printf( "./ambi_converter input_file output_file input_convention output_convention\n" );
+        printf( "\n" );
+        printf( "Usage: ambi_converter input_file output_file input_convention output_convention\n" );
         printf( "\n" );
         printf( "input_convention and output convention must be an integer number in [0,5]\n" );
         printf( "the following conventions are supported:\n" );
diff --git a/readme.txt b/readme.txt
index 54b602c99529e6fe8e3d6f797153023d32bcae91..9a8cefd81855b7362dd12ef05dfdf37580ae26ac 100644
--- a/readme.txt
+++ b/readme.txt
@@ -33,12 +33,13 @@
 
 These files represent the 3GPP EVS Codec Extension for Immersive Voice and 
 Audio Services (IVAS) floating-point C simulation. All code is writtten
-in ISO/IEC C99. The system is implemented as four separate programs:
+in ISO/IEC C99. The system is implemented as five separate programs:
 
         IVAS_cod   	    IVAS Encoder
         IVAS_dec   	    IVAS Decoder
         IVAS_rend  	    IVAS External Renderer
         ISAR_post_rend  ISAR Post Renderer
+        ambi_converter  Ambisonics format converter
 
 For encoding using the coder program, the input is a binary
 audio file (*.8k, *.16k, *.32k, *.48k) and the output is a binary
@@ -411,7 +412,22 @@ omitted, the LFE input is downmixed to all channels with a factor of 1/N. Positi
 the LFE channel. Maximum number of supported loudskpeakers N is 16.
 An example custom loudspeaker layout file is available: ls_setup_16ch_8+4+4.txt
 
-                       
+The usage of the "ambi_converter" program 
+------------------------------------------
+
+Usage: ambi_converter input_file output_file input_convention output_convention
+
+input_convention and output convention must be an integer number in [0,5]
+the following conventions are supported:
+0 : ACN-SN3D
+1 : ACN-N3D
+2 : FuMa-MaxN
+3 : FuMa-FuMa
+4 : SID-SN3D
+5 : SID-N3D
+
+Either the input or the output convention must always be ACN-SN3D!
+
 
                        RUNNING THE SELF TEST
                        =====================