diff --git a/ports/fftw3/CONTROL b/ports/fftw3/CONTROL
index 338c602d3a..ccdc0e7ee9 100644
--- a/ports/fftw3/CONTROL
+++ b/ports/fftw3/CONTROL
@@ -1,3 +1,3 @@
 Source: fftw3
-Version: 3.3.7
+Version: 3.3.7-1
 Description: FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine transforms or DCT/DST).