diff --git a/dsp/src/lib.rs b/dsp/src/lib.rs
index 56a3004..191054a 100644
--- a/dsp/src/lib.rs
+++ b/dsp/src/lib.rs
@@ -119,7 +119,7 @@ pub mod iir;
 pub mod iir_int;
 pub mod lockin;
 pub mod pll;
-pub mod reciprocal_pll;
+pub mod rpll;
 pub mod unwrap;
 
 pub use atan2::atan2;
diff --git a/dsp/src/lockin.rs b/dsp/src/lockin.rs
index 72f505c..6e68bb4 100644
--- a/dsp/src/lockin.rs
+++ b/dsp/src/lockin.rs
@@ -43,7 +43,7 @@ mod test {
         atan2,
         iir_int::{IIRState, IIR},
         lockin::Lockin,
-        reciprocal_pll::TimestampHandler,
+        rpll::TimestampHandler,
         testing::{isclose, max_error},
         Complex,
     };
diff --git a/dsp/src/reciprocal_pll.rs b/dsp/src/rpll.rs
similarity index 100%
rename from dsp/src/reciprocal_pll.rs
rename to dsp/src/rpll.rs
diff --git a/src/bin/lockin.rs b/src/bin/lockin.rs
index 304c35e..5460461 100644
--- a/src/bin/lockin.rs
+++ b/src/bin/lockin.rs
@@ -16,7 +16,7 @@ use stabilizer::{
     hardware, server, ADC_SAMPLE_TICKS_LOG2, SAMPLE_BUFFER_SIZE_LOG2,
 };
 
-use dsp::{iir, iir_int, lockin::Lockin, reciprocal_pll::TimestampHandler};
+use dsp::{iir, iir_int, lockin::Lockin, rpll::TimestampHandler};
 use hardware::{
     Adc0Input, Adc1Input, Dac0Output, Dac1Output, InputStamper, AFE0, AFE1,
 };