diff --git a/aegisub/src/ffmpegsource_common.cpp b/aegisub/src/ffmpegsource_common.cpp
index eced81f7f..dddba32ad 100644
--- a/aegisub/src/ffmpegsource_common.cpp
+++ b/aegisub/src/ffmpegsource_common.cpp
@@ -199,7 +199,7 @@ void FFmpegSourceProvider::SetLogLevel() {
 
 
 FFMS_IndexErrorHandling FFmpegSourceProvider::GetErrorHandlingMode() {
-	wxString Mode = lagi_wxString(OPT_GET("Provider/Audio/FFMpegSource/Decode Error Handling")->GetString());
+	wxString Mode = lagi_wxString(OPT_GET("Provider/Audio/FFmpegSource/Decode Error Handling")->GetString());
 
 	if (!Mode.CmpNoCase(_T("ignore")))
 		return FFMS_IEH_IGNORE;
diff --git a/aegisub/src/libresrc/default_config.json b/aegisub/src/libresrc/default_config.json
index b53ee7834..f9808d8e7 100644
--- a/aegisub/src/libresrc/default_config.json
+++ b/aegisub/src/libresrc/default_config.json
@@ -202,7 +202,7 @@
 			"AVS" : {
 				"Sample Rate" : 0
 			},
-			"FFMpegSource" : {
+			"FFmpegSource" : {
 				"Decode Error Handling" : "stop"
 			},
 			"PCM" : {
@@ -225,7 +225,7 @@
 			"Cache" : {
 				"Size" : 32
 			},
-			"FFMpegSource" : {
+			"FFmpegSource" : {
 				"Decoding Threads" : 1,
 				"Unsafe Seeking" : false
 			}
diff --git a/aegisub/src/video_provider_ffmpegsource.cpp b/aegisub/src/video_provider_ffmpegsource.cpp
index 32600b640..82f6e6ce7 100644
--- a/aegisub/src/video_provider_ffmpegsource.cpp
+++ b/aegisub/src/video_provider_ffmpegsource.cpp
@@ -209,7 +209,7 @@ void FFmpegSourceVideoProvider::LoadVideo(wxString filename) {
 	// set seekmode
 	// TODO: give this its own option?
 	int SeekMode;
-	if (OPT_GET("Provider/Video/FFMpegSource/Unsafe Seeking")->GetBool())
+	if (OPT_GET("Provider/Video/FFmpegSource/Unsafe Seeking")->GetBool())
 		SeekMode = FFMS_SEEK_UNSAFE;
 	else 
 		SeekMode = FFMS_SEEK_NORMAL;