diff --git a/util/cmake/condition_simplifier_cache.py b/util/cmake/condition_simplifier_cache.py
index b405ef23f8..d1efff1d87 100644
--- a/util/cmake/condition_simplifier_cache.py
+++ b/util/cmake/condition_simplifier_cache.py
@@ -37,6 +37,13 @@ import time
 
 from typing import Callable
 
+condition_simplifier_cache_enabled = True
+
+
+def set_condition_simplified_cache_enabled(value: bool):
+    global condition_simplifier_cache_enabled
+    condition_simplifier_cache_enabled = value
+
 
 def get_current_file_path() -> str:
     try:
@@ -106,7 +113,7 @@ def simplify_condition_memoize(f: Callable[[str], str]):
     atexit.register(update_cache_file)
 
     def helper(condition: str) -> str:
-        if condition not in cache_file_content["cache"]["conditions"]:
+        if condition not in cache_file_content["cache"]["conditions"] or not condition_simplifier_cache_enabled:
             cache_file_content["cache"]["conditions"][condition] = f(condition)
         return cache_file_content["cache"]["conditions"][condition]
 
diff --git a/util/cmake/pro2cmake.py b/util/cmake/pro2cmake.py
index 7698876553..042d8022f1 100755
--- a/util/cmake/pro2cmake.py
+++ b/util/cmake/pro2cmake.py
@@ -40,6 +40,7 @@ import glob
 import collections
 
 from condition_simplifier import simplify_condition
+from condition_simplifier_cache import set_condition_simplified_cache_enabled
 
 try:
     collectionsAbc = collections.abc
@@ -155,6 +156,14 @@ def _parse_commandline():
         help="Don't automatically remove CMakeLists.gen.txt and other " "intermediate files.",
     )
 
+    parser.add_argument(
+        "-e",
+        "--skip-condition-cache",
+        dest="skip_condition_cache",
+        action="store_true",
+        help="Don't use condition simplifier cache (conversion speed may decrease).",
+    )
+
     parser.add_argument(
         "files",
         metavar="<.pro/.pri file>",
@@ -162,7 +171,6 @@ def _parse_commandline():
         nargs="+",
         help="The .pro/.pri file to process",
     )
-
     return parser.parse_args()
 
 
@@ -3460,6 +3468,8 @@ def main() -> None:
     args = _parse_commandline()
 
     debug_parsing = args.debug_parser or args.debug
+    if args.skip_condition_cache:
+        set_condition_simplified_cache_enabled(False)
 
     backup_current_dir = os.getcwd()