diff --git a/src/modulator.c b/src/modulator.c
index 964528e..b896c72 100644
--- a/src/modulator.c
+++ b/src/modulator.c
@@ -41,7 +41,7 @@ void Modulator_saveToFile(RDSModulatorParameters *emp, const char *option) {
 		perror("Error opening file");
 		return;
 	}
-	fwrite(&tempFile, sizeof(RDSModulatorParameters), 1, file);
+	fwrite(&tempFile, sizeof(RDSModulatorParametersFile), 1, file);
 	fclose(file);
 }