diff --git a/libgimp/tests/libgimp-run-c-test.py b/libgimp/tests/libgimp-run-c-test.py
new file mode 100644
index 0000000000..87e6ed9efe
--- /dev/null
+++ b/libgimp/tests/libgimp-run-c-test.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+import os
+import sys
+import subprocess
+from pathlib import Path
+
+GIMP_EXE = sys.argv[1]
+TEST_FILE = sys.argv[2]
+SRC_DIR = os.path.dirname(TEST_FILE)
+SRC_DIR = Path(os.path.realpath(SRC_DIR)).resolve().as_posix()
+TEST_NAME = sys.argv[3]
+
+cmd = (
+  f"import os; import sys; sys.path.insert(0, '{SRC_DIR}'); from pygimp.utils import gimp_c_assert; "
+  f"proc = Gimp.get_pdb().lookup_procedure('{TEST_NAME}'); gimp_c_assert('{TEST_FILE}', 'Test PDB procedure does not exist: {{}}'.format('{TEST_NAME}'), proc is not None); "
+  f"result = proc.run(None); "
+  f"print('SUCCESS') if result.index(0) == Gimp.PDBStatusType.SUCCESS else gimp_c_assert('{TEST_FILE}', result.index(1), False);"
+)
+subprocess.run(['python3', GIMP_EXE, "-nis", "--batch-interpreter", "python-fu-eval", "-b", cmd, "--quit"], check=True)
diff --git a/libgimp/tests/libgimp-run-c-test.sh b/libgimp/tests/libgimp-run-c-test.sh
deleted file mode 100644
index 674cd6351e..0000000000
--- a/libgimp/tests/libgimp-run-c-test.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/sh
-
-GIMP_EXE=$1
-TEST_FILE=$2
-SRC_DIR=`dirname $TEST_FILE`
-SRC_DIR=`realpath $SRC_DIR`
-TEST_NAME=$3
-
-cmd="import os; import sys; sys.path.insert(0, '$SRC_DIR'); from pygimp.utils import gimp_c_assert;"
-cmd="$cmd proc = Gimp.get_pdb().lookup_procedure('$TEST_NAME'); gimp_c_assert('$TEST_FILE', 'Test PDB procedure does not exist: {}'.format('$TEST_NAME'), proc is not None);"
-cmd="$cmd result = proc.run(None);"
-cmd="$cmd print('SUCCESS') if result.index(0) == Gimp.PDBStatusType.SUCCESS else gimp_c_assert('$TEST_FILE', result.index(1), False);"
-echo "$cmd" | python3 "$GIMP_EXE" -nis --batch-interpreter "python-fu-eval" -b - --quit
diff --git a/libgimp/tests/meson.build b/libgimp/tests/meson.build
index c3b8ffcddf..b4cfcd673d 100644
--- a/libgimp/tests/meson.build
+++ b/libgimp/tests/meson.build
@@ -24,7 +24,7 @@ test_env.append('GIMP_TESTING_PLUGINDIRS', meson.project_build_root() / 'libgimp
 test_env.set('GIMP_TESTING_ABS_TOP_SRCDIR', meson.project_source_root())
 
 run_python_test = find_program('./libgimp-run-python-test.sh')
-run_c_test      = find_program('./libgimp-run-c-test.sh')
+run_c_test      = find_program('./libgimp-run-c-test.py')
 foreach test_name : tests
   basename = 'test-' + test_name