diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e74957fda..b4decda32 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -313,5 +313,5 @@ jobs:
         name: Run Complement Tests
         env:
           COMPLEMENT_BASE_IMAGE: complement-dendrite:latest
-          API: ${{ matrix.api && "true" }}
+          API: ${{ matrix.api && 1 }}
         working-directory: complement
diff --git a/build/scripts/Complement.Dockerfile b/build/scripts/Complement.Dockerfile
index f2add4ac8..6b2942d97 100644
--- a/build/scripts/Complement.Dockerfile
+++ b/build/scripts/Complement.Dockerfile
@@ -21,7 +21,7 @@ WORKDIR /dendrite
 RUN ./generate-keys --private-key matrix_key.pem
 
 ENV SERVER_NAME=localhost
-ENV API=false
+ENV API=0
 EXPOSE 8008 8448
 
 # At runtime, generate TLS cert based on the CA now mounted at /ca
@@ -29,4 +29,4 @@ EXPOSE 8008 8448
 CMD ./generate-keys --server $SERVER_NAME --tls-cert server.crt --tls-key server.key --tls-authority-cert /complement/ca/ca.crt --tls-authority-key /complement/ca/ca.key && \
  ./generate-config -server $SERVER_NAME --ci > dendrite.yaml && \
  cp /complement/ca/ca.crt /usr/local/share/ca-certificates/ && update-ca-certificates && \
- ./dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml -api=${API:-false}
+ ./dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml -api=${API:-0}
diff --git a/build/scripts/ComplementPostgres.Dockerfile b/build/scripts/ComplementPostgres.Dockerfile
index c0709d9c0..b98f4671c 100644
--- a/build/scripts/ComplementPostgres.Dockerfile
+++ b/build/scripts/ComplementPostgres.Dockerfile
@@ -39,7 +39,7 @@ WORKDIR /dendrite
 RUN ./generate-keys --private-key matrix_key.pem
 
 ENV SERVER_NAME=localhost
-ENV API=false
+ENV API=0
 EXPOSE 8008 8448
 
 
@@ -51,4 +51,4 @@ CMD /build/run_postgres.sh && ./generate-keys --server $SERVER_NAME --tls-cert s
  sed -i "s%connection_string:.*$%connection_string: postgresql://postgres@localhost/postgres?sslmode=disable%g" dendrite.yaml && \
  sed -i 's/max_open_conns:.*$/max_open_conns: 100/g' dendrite.yaml && \
  cp /complement/ca/ca.crt /usr/local/share/ca-certificates/ && update-ca-certificates && \
- ./dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml -api=${API:-false}
\ No newline at end of file
+ ./dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml -api=${API:-0}
\ No newline at end of file