diff --git a/src/bench/CMakeLists.txt b/src/bench/CMakeLists.txt
--- a/src/bench/CMakeLists.txt
+++ b/src/bench/CMakeLists.txt
@@ -9,7 +9,7 @@
 # Process raw files.
 file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/data")
 
-find_program(PYTHON python)
+find_program(PYTHON python3)
 foreach(_raw_file ${BENCH_DATA_RAW_FILES})
 	string(APPEND
 		_generated_header_output
diff --git a/src/bench/data/convert-raw-to-header.py b/src/bench/data/convert-raw-to-header.py
--- a/src/bench/data/convert-raw-to-header.py
+++ b/src/bench/data/convert-raw-to-header.py
@@ -9,7 +9,7 @@
         contents = f.read()
 
     print("static unsigned const char {}[] = {{".format(test_name))
-    print(", ".join(map(lambda x: "0x{:02x}".format(ord(x)), contents)))
+    print(", ".join(map(lambda x: "0x{:02x}".format(x), contents)))
     print("};")
 
 
diff --git a/src/test/CMakeLists.txt b/src/test/CMakeLists.txt
--- a/src/test/CMakeLists.txt
+++ b/src/test/CMakeLists.txt
@@ -5,7 +5,7 @@
 # Process json files.
 file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/data")
 
-find_program(PYTHON python)
+find_program(PYTHON python3)
 function(gen_json_header NAME)
 	set(HEADERS "")
 	foreach(f ${ARGN})
diff --git a/src/test/data/generate_header.py b/src/test/data/generate_header.py
--- a/src/test/data/generate_header.py
+++ b/src/test/data/generate_header.py
@@ -11,7 +11,7 @@
     print("#include <cstdint>\n")
     print("namespace json_tests {")
     print("static const uint8_t {}[] = {{".format(test_name))
-    print(", ".join(map(lambda x: "0x{:02x}".format(ord(x)), contents)))
+    print(", ".join(map(lambda x: "0x{:02x}".format(x), contents)))
     print("};")
     print("};")