diff --git a/src/gba/supervisor/config.c b/src/gba/supervisor/config.c
index 55770f954..c45c004c6 100644
--- a/src/gba/supervisor/config.c
+++ b/src/gba/supervisor/config.c
@@ -85,9 +85,15 @@ static bool _lookupFloatValue(const struct GBAConfig* config, const char* key, f
 		return false;
 	}
 	char* end;
+#ifndef _WIN32
 	locale_t l = newlocale(LC_NUMERIC_MASK, "C", (locale_t) 0);
 	float value = strtof_l(charValue, &end, l);
 	freelocale(l);
+#else
+	const char* oldlocale = setlocale(LC_NUMERIC, "C");
+	float value = strtof(charValue, &end);
+	setlocale(LC_NUMERIC, oldlocale);
+#endif
 	if (*end) {
 		return false;
 	}
diff --git a/src/util/common.h b/src/util/common.h
index 29d031180..1dd43ef3f 100644
--- a/src/util/common.h
+++ b/src/util/common.h
@@ -20,7 +20,10 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+
+#ifndef _WIN32
 #include <xlocale.h>
+#endif
 
 #define UNUSED(V) (void)(V)
 
diff --git a/src/util/configuration.c b/src/util/configuration.c
index 63f8cef75..86226b61c 100644
--- a/src/util/configuration.c
+++ b/src/util/configuration.c
@@ -79,9 +79,15 @@ void ConfigurationSetUIntValue(struct Configuration* configuration, const char*
 
 void ConfigurationSetFloatValue(struct Configuration* configuration, const char* section, const char* key, float value) {
 	char charValue[16];
+#ifndef _WIN32
 	locale_t l = newlocale(LC_NUMERIC_MASK, "C", (locale_t) 0);
 	snprintf_l(charValue, sizeof(charValue), l, "%.*g", FLT_DIG, value);
 	freelocale(l);
+#else
+	const char* oldlocale = setlocale(LC_NUMERIC, "C");
+	snprintf(charValue, sizeof(charValue), "%.*g", FLT_DIG, value);
+	setlocale(LC_NUMERIC, oldlocale);
+#endif
 	ConfigurationSetValue(configuration, section, key, charValue);
 }