diff --git a/common/wave.cpp b/common/wave.c
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rename to common/wave.c
diff --git a/decode_ft8.cpp b/decode_ft8.c
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rename to decode_ft8.c
diff --git a/ft8/constants.cpp b/ft8/constants.c
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rename to ft8/constants.c
diff --git a/ft8/decode.cpp b/ft8/decode.c
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rename to ft8/decode.c
diff --git a/ft8/encode.cpp b/ft8/encode.c
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rename to ft8/encode.c
diff --git a/ft8/ldpc.cpp b/ft8/ldpc.c
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rename to ft8/ldpc.c
diff --git a/ft8/pack.cpp b/ft8/pack.c
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rename to ft8/pack.c
diff --git a/ft8/text.cpp b/ft8/text.c
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diff --git a/ft8/unpack.cpp b/ft8/unpack.c
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diff --git a/gen_ft8.cpp b/gen_ft8.c
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diff --git a/test.cpp b/test.c
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rename to test.c