diff --git a/Makefile.am b/Makefile.am
index 10c3e256..92f207db 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -934,6 +934,8 @@ espeak-ng-data/mbrola_ph/la1_phtrans: phsource/mbrola/la1 src/espeak-ng
 	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/la1
 
 espeak-ng-data/mbrola_ph/lt_phtrans: phsource/mbrola/lt src/espeak-ng
+	mkdir -p espeak-ng-data/mbrola_ph
+	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/lt
 
 espeak-ng-data/mbrola_ph/mx1_phtrans: phsource/mbrola/mx1 src/espeak-ng
 	mkdir -p espeak-ng-data/mbrola_ph
diff --git a/espeak-ng-data/voices/mb/mb-lt1 b/espeak-ng-data/voices/mb/mb-lt1
index 39541440..f1cf4a3d 100644
--- a/espeak-ng-data/voices/mb/mb-lt1
+++ b/espeak-ng-data/voices/mb/mb-lt1
@@ -3,4 +3,4 @@ language lt 7
 gender male
 
 pitch 82 117
-mbrola lt1 lt1_phtrans
+mbrola lt1 lt_phtrans
diff --git a/espeak-ng-data/voices/mb/mb-lt2 b/espeak-ng-data/voices/mb/mb-lt2
index e19d34d3..234bad4b 100644
--- a/espeak-ng-data/voices/mb/mb-lt2
+++ b/espeak-ng-data/voices/mb/mb-lt2
@@ -3,4 +3,4 @@ language lt 7
 gender male
 
 pitch 82 117
-mbrola lt2 lt2_phtrans
+mbrola lt2 lt_phtrans