diff --git a/Dockerfile.test b/Dockerfile.test
index e724f31..a8ccfeb 100644
--- a/Dockerfile.test
+++ b/Dockerfile.test
@@ -10,7 +10,7 @@ RUN wget https://gitlab.com/-/project/6808260/uploads/094ce726ce3c6cf8c14560f1e3
     && mv akku-1.1.0.amd64-linux akku
 RUN git clone https://github.com/ashinn/chibi-scheme.git --depth=2
 RUN git clone https://codeberg.org/retropikzel/compile-scheme.git --depth=2
-RUN git clone https://github.com/srfi-explorations/r7rs-srfi.git --branch=retropikzel-fixes --depth=3
+RUN git clone https://github.com/srfi-explorations/r7rs-srfi.git --branch=retropikzel-fixes --depth=4
 WORKDIR /build/chibi-scheme
 RUN make
 RUN make install
@@ -45,8 +45,6 @@ RUN make SCHEME=${SCHEME} SRFI=60 build install
 RUN make SCHEME=${SCHEME} SRFI=145 build install
 RUN make SCHEME=${SCHEME} SRFI=180 build install
 WORKDIR /workdir
-#RUN snow-chibi install --impls=${SCHEME} --always-yes "(srfi 180)"
-RUN mkdir -p srfi
 COPY Makefile .
 COPY retropikzel retropikzel/
 
diff --git a/retropikzel/ctrf.sld b/retropikzel/ctrf.sld
index 5464b76..78137ca 100644
--- a/retropikzel/ctrf.sld
+++ b/retropikzel/ctrf.sld
@@ -41,11 +41,6 @@
       (begin
         (define (time-ms)
           (time-second (current-time)))))
-    (guile
-      (import (srfi 19))
-      (begin
-        (define (time-ms)
-          (time-second (current-time)))))
     (else
       (begin
         (define (time-ms) (/ (/ (current-jiffy) (jiffies-per-second)) 1000)))))