diff --git a/prt/tests/compute-rs/Dockerfile b/prt/tests/compute-rs/Dockerfile
index 71854c30..7f36f763 100644
--- a/prt/tests/compute-rs/Dockerfile
+++ b/prt/tests/compute-rs/Dockerfile
@@ -37,7 +37,7 @@ COPY ./prt /app/prt
 WORKDIR /app/prt/tests/compute-rs
 RUN cargo build --release --bin cartesi-prt-compute
 
-FROM --platform=linux/amd64 cartesi/machine-emulator:0.18.1
+FROM cartesi/machine-emulator:0.18.1
 
 USER root
 RUN apt-get update && \
diff --git a/prt/tests/compute/program/doom/Dockerfile b/prt/tests/compute/program/doom/Dockerfile
index 4c5930f0..8c7d647f 100644
--- a/prt/tests/compute/program/doom/Dockerfile
+++ b/prt/tests/compute/program/doom/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=linux/amd64 cartesi/machine-emulator:0.18.1
+FROM cartesi/machine-emulator:0.18.1
 USER root
 ENV FREEDOOM_VER=v0.2.0
 ENV KERNEL_VER=v0.19.1-riv1