diff --git a/src/Sound.cpp b/src/Sound.cpp
index c7f91b41..05e2f579 100644
--- a/src/Sound.cpp
+++ b/src/Sound.cpp
@@ -88,6 +88,7 @@ BOOL InitSoundObject(const char *resname, int no)
 	unsigned short format = resource_pointer[5] | (resource_pointer[6] << 8);
 	unsigned short channels = resource_pointer[7] | (resource_pointer[8] << 8);
 	unsigned long sample_rate = resource_pointer[9] | (resource_pointer[0xA] << 8) | (resource_pointer[0xB] << 16) | (resource_pointer[0xC] << 24);
+	unsigned short bits_per_sample = resource_pointer[0x13] | (resource_pointer[0x14] << 8);
 
 	if (format != 1)	// 1 is WAVE_FORMAT_PCM
 		return FALSE;
@@ -95,6 +96,9 @@ BOOL InitSoundObject(const char *resname, int no)
 	if (channels != 1)	// The mixer only supports mono right now
 		return FALSE;
 
+	if (bits_per_sample != 8)	// The mixer only supports 8-bit samples (unsigned ones, at that)
+		return FALSE;
+
 	// 二次バッファの生成 (Create secondary buffer)
 	lpSECONDARYBUFFER[no] = AudioBackend_CreateSound(sample_rate, resource_pointer + 0x3A, buffer_size);
 
@@ -156,6 +160,7 @@ BOOL LoadSoundObject(const char *file_name, int no)
 	unsigned short format = wp[5] | (wp[6] << 8);
 	unsigned short channels = wp[7] | (wp[8] << 8);
 	unsigned long sample_rate = wp[9] | (wp[0xA] << 8) | (wp[0xB] << 16) | (wp[0xC] << 24);
+	unsigned short bits_per_sample = wp[0x13] | (wp[0x14] << 8);
 
 	if (format != 1)	// 1 is WAVE_FORMAT_PCM
 	{
@@ -169,6 +174,12 @@ BOOL LoadSoundObject(const char *file_name, int no)
 		return FALSE;
 	}
 
+	if (bits_per_sample != 8)	// The mixer only supports 8-bit samples (unsigned ones, at that)
+	{
+		free(wp);
+		return FALSE;
+	}
+
 	// セカンダリバッファの生成 (Create secondary buffer)
 	lpSECONDARYBUFFER[no] = AudioBackend_CreateSound(sample_rate, wp + 0x3A, buffer_size);