diff --git a/lib/hooks/dp.cpp b/lib/hooks/dp.cpp
index 1146edfd8..537baae61 100644
--- a/lib/hooks/dp.cpp
+++ b/lib/hooks/dp.cpp
@@ -81,7 +81,7 @@ class DPHook : public Hook {
 
     // Reconstruct the original signal
     for (int k = 0; k < fharmonics_len; k++) {
-      double freq = fharmonics[k];
+      double freq = fharmonics[k] * f0;
       // cppcheck-suppress objectIndex
       std::complex<double> coeff = in[k];
       std::complex<double> om = 2.0i * M_PI * freq * time;