diff --git a/src/libespeak-ng/compiledata.c b/src/libespeak-ng/compiledata.c
index 925b940d..2e30ac3d 100644
--- a/src/libespeak-ng/compiledata.c
+++ b/src/libespeak-ng/compiledata.c
@@ -429,11 +429,6 @@ typedef struct {
 
 static REF_HASH_TAB *ref_hash_tab[256];
 
-#define N_ENVELOPES  30
-int n_envelopes = 0;
-char envelope_paths[N_ENVELOPES][80];
-unsigned char envelope_dat[N_ENVELOPES][ENV_LEN];
-
 typedef struct {
 	FILE *file;
 	int linenum;
@@ -1340,7 +1335,7 @@ static int LoadWavefile(FILE *f, const char *fname)
 	return displ | 0x800000; // set bit 23 to indicate a wave file rather than a spectrum
 }
 
-static espeak_ng_STATUS LoadEnvelope(FILE *f, const char *fname, int *displ)
+static espeak_ng_STATUS LoadEnvelope(FILE *f, int *displ)
 {
 	char buf[128];
 
@@ -1354,12 +1349,6 @@ static espeak_ng_STATUS LoadEnvelope(FILE *f, const char *fname, int *displ)
 		return errno;
 	fwrite(buf, 128, 1, f_phdata);
 
-	if (n_envelopes < N_ENVELOPES) {
-		strncpy0(envelope_paths[n_envelopes], fname, sizeof(envelope_paths[0]));
-		memcpy(envelope_dat[n_envelopes], buf, sizeof(envelope_dat[0]));
-		n_envelopes++;
-	}
-
 	return ENS_OK;
 }
 
@@ -1380,7 +1369,7 @@ static int Hash8(const char *string)
 	return (hash+chars) & 0xff;
 }
 
-static int LoadEnvelope2(FILE *f, const char *fname)
+static int LoadEnvelope2(FILE *f)
 {
 	int ix, ix2;
 	int n;
@@ -1431,12 +1420,6 @@ static int LoadEnvelope2(FILE *f, const char *fname)
 		env[x] = y;
 	}
 
-	if (n_envelopes < N_ENVELOPES) {
-		strncpy0(envelope_paths[n_envelopes], fname, sizeof(envelope_paths[0]));
-		memcpy(envelope_dat[n_envelopes], env, ENV_LEN);
-		n_envelopes++;
-	}
-
 	displ = ftell(f_phdata);
 	fwrite(env, 1, ENV_LEN, f_phdata);
 
@@ -1497,10 +1480,10 @@ static espeak_ng_STATUS LoadDataFile(const char *path, int control, int *addr)
 			*addr = LoadWavefile(f, path);
 			type_code = 'W';
 		} else if (id == 0x43544950) {
-			status = LoadEnvelope(f, path, addr);
+			status = LoadEnvelope(f, addr);
 			type_code = 'E';
 		} else if (id == 0x45564E45) {
-			*addr = LoadEnvelope2(f, path);
+			*addr = LoadEnvelope2(f);
 			type_code = 'E';
 		} else {
 			error("File not SPEC or RIFF: %s", path);
@@ -2545,7 +2528,6 @@ espeak_ng_CompilePhonemeDataPath(long rate,
 	WavegenInit(rate, 0);
 	WavegenSetVoice(voice);
 
-	n_envelopes = 0;
 	error_count = 0;
 	resample_count = 0;
 	memset(markers_used, 0, sizeof(markers_used));