--- a/parts.c
+++ b/parts.c
@@ -338,10 +338,10 @@ if(! file_header)
 	return 0;
 	}
 
-strcpy(file_header -> main_chunk, "RIFF");
+memcpy(file_header -> main_chunk, "RIFF", 4);
 file_header -> length = length + header_size - 8;
-strcpy(file_header -> chunk_type, "WAVE"); 
-strcpy(file_header -> sub_chunk, "fmt ");	// watch out the zero termination overwrites next var
+memcpy(file_header -> chunk_type, "WAVE", 4);
+memcpy(file_header -> sub_chunk, "fmt ", 4);	// watch out the zero termination overwrites next var
 file_header -> length_chunk = 16;							//always 16
 file_header -> format = 1;									//PCM
 file_header -> modus = modus;								// stereo
@@ -349,7 +349,7 @@ file_header -> sample_fq = sample_fq;						// 44100, 48000, etc...
 file_header -> byte_p_sec = byte_p_sec;						// little endian
 file_header -> byte_p_spl = byte_p_spl;		 				// 4 stereo
 file_header -> bit_p_spl = bit_p_spl;						// 16 bits
-strcpy(file_header -> data_chunk, "data");	// watch out the zero termination overwrites next var
+memcpy(file_header -> data_chunk, "data", 4);	// watch out the zero termination overwrites next var
 file_header -> data_length = (unsigned long)length;
 
 if(debug_flag)