diff --git a/src/libespeak-ng/klatt.h b/src/libespeak-ng/klatt.h
index 4385ecf8..acbfb46a 100644
--- a/src/libespeak-ng/klatt.h
+++ b/src/libespeak-ng/klatt.h
@@ -112,9 +112,6 @@ typedef struct {
 #define Rnpp 10
 #define R1p  11
 #define R2p  12
-#define R3p  13
-#define R4p  14
-#define R5p  15
 #define R6p  16
 
 #define RGL  17
diff --git a/src/libespeak-ng/spect.h b/src/libespeak-ng/spect.h
index 14567b15..1d8e8904 100644
--- a/src/libespeak-ng/spect.h
+++ b/src/libespeak-ng/spect.h
@@ -33,7 +33,6 @@ float polint(float xa[], float ya[], int n, float x);
 
 #define FRAME_WIDTH  1000  // max width for 8000kHz frame
 #define MAX_DISPLAY_FREQ 9500
-#define FRAME_HEIGHT 240
 
 #define T_AMPLITUDE 308
 #define T_AV      312
diff --git a/src/libespeak-ng/translate.h b/src/libespeak-ng/translate.h
index 6595e023..f292a7a1 100644
--- a/src/libespeak-ng/translate.h
+++ b/src/libespeak-ng/translate.h
@@ -64,9 +64,6 @@ extern "C"
 #define FLAG_ALT_TRANS      0x8000 // language specific
 #define FLAG_ALT2_TRANS    0x10000 // language specific
 #define FLAG_ALT3_TRANS    0x20000 // language specific
-#define FLAG_ALT4_TRANS    0x40000 // language specific
-#define FLAG_ALT5_TRANS    0x80000 // language specific
-#define FLAG_ALT6_TRANS   0x100000 // language specific
 #define FLAG_ALT7_TRANS   0x200000 // language specific
 
 #define FLAG_COMBINE      0x800000 // combine with the next word