diff --git a/android/app/build.gradle.kts b/android/app/build.gradle.kts
index fcd2ef9..cc049fb 100644
--- a/android/app/build.gradle.kts
+++ b/android/app/build.gradle.kts
@@ -93,6 +93,8 @@ dependencies {
 
 val buildContent = tasks.register<Exec>("buildContent") {
     workingDir = rootProject.projectDir.parentFile
+    environment("PYTHONUTF8", "1")
+    environment("PYTHONIOENCODING", "utf-8")
     commandLine("python3", "scripts/build-content.py")
     inputs.dir(rootProject.projectDir.parentFile.resolve("content"))
     inputs.file(rootProject.projectDir.parentFile.resolve("scripts/build-content.py"))
diff --git a/android/desktop/build.gradle.kts b/android/desktop/build.gradle.kts
index bbbbd11..7f36eac 100644
--- a/android/desktop/build.gradle.kts
+++ b/android/desktop/build.gradle.kts
@@ -41,6 +41,8 @@ val buildContent = tasks.register<Exec>("buildContent") {
     workingDir = repoRoot
     val python = System.getenv("PYTHON")?.takeIf { it.isNotBlank() }
         ?: if (System.getProperty("os.name").startsWith("Windows")) "python" else "python3"
+    environment("PYTHONUTF8", "1")
+    environment("PYTHONIOENCODING", "utf-8")
     commandLine(python, "scripts/build-content.py", "--out", out.path)
     inputs.dir(repoRoot.resolve("content"))
     inputs.file(repoRoot.resolve("scripts/build-content.py"))
diff --git a/scripts/build-content.py b/scripts/build-content.py
index c8e8b0d..fe5fbcf 100644
--- a/scripts/build-content.py
+++ b/scripts/build-content.py
@@ -14,6 +14,21 @@ import unicodedata
 from dataclasses import dataclass, field
 from pathlib import Path
 
+
+def _force_utf8_stdio() -> None:
+    """Windows defaults stdout to cp1252, which cannot print Czech logs."""
+    for stream in (sys.stdout, sys.stderr):
+        reconfigure = getattr(stream, "reconfigure", None)
+        if reconfigure is None:
+            continue
+        try:
+            reconfigure(encoding="utf-8", errors="replace")
+        except (OSError, ValueError):
+            pass
+
+
+_force_utf8_stdio()
+
 ROOT = Path(__file__).resolve().parents[1]
 CONTENT = ROOT / "content"
 OUTS = [ROOT / "android" / "app" / "src" / "main" / "assets" / "content.json"]