diff --git a/conformal.cpp b/conformal.cpp
index b425b905..823bcf33 100644
--- a/conformal.cpp
+++ b/conformal.cpp
@@ -633,7 +633,7 @@ namespace conformal {
     dialog::edit_string(formula, "formula", 
       XLAT(
       "This lets you specify the projection as a formula f. "
-      "The formula has access to the value 'z', which is a complex number corresponding to the x,y coordinates in the currently selected model; "
+      "The formula has access to the value 'z', which is a complex number corresponding to the (x,y) coordinates in the currently selected model; "
       "the point z is mapped to f(z). You can also use the underlying coordinates ux, uy, uz."
       ) + "\n\n" + parser_help()
       );
diff --git a/language-cz.cpp b/language-cz.cpp
index 3b0f55c1..39284d11 100644
--- a/language-cz.cpp
+++ b/language-cz.cpp
@@ -7475,7 +7475,7 @@ S("left-handed", "levoruk%ý0")
 
 S(
   "This lets you specify the projection as a formula f. "
-  "The formula has access to the value 'z', which is a complex number corresponding to the x,y coordinates in the currently selected model; "
+  "The formula has access to the value 'z', which is a complex number corresponding to the (x,y) coordinates in the currently selected model; "
   "the point z is mapped to f(z). You can also use the underlying coordinates ux, uy, uz.",
   
   "Toto umožòuje specifikovat projekci ve formì vzorce f. "
diff --git a/language-pl.cpp b/language-pl.cpp
index 07106097..ac7c7c9e 100644
--- a/language-pl.cpp
+++ b/language-pl.cpp
@@ -7228,11 +7228,11 @@ S("left-handed", "leworęczn%y0")
 
 S(
   "This lets you specify the projection as a formula f. "
-  "The formula has access to the value 'z', which is a complex number corresponding to the x,y coordinates in the currently selected model; "
+  "The formula has access to the value 'z', which is a complex number corresponding to the (x,y) coordinates in the currently selected model; "
   "the point z is mapped to f(z). You can also use the underlying coordinates ux, uy, uz.",
   
   "Tu możesz zdefiniować własną projekcję podając wzór f. "
-  "Wzór może zależeć od zmiennej 'z', będącej liczbą zespoloną odpowiadającą współrzędnym x,y w obecnie ustawionym modelu; "
+  "Wzór może zależeć od zmiennej 'z', będącej liczbą zespoloną odpowiadającą współrzędnym (x,y) w obecnie ustawionym modelu; "
   "punkt z będzie przekształcony w f(z). Możesz też używać współrzędnych podstawowych ux, uy, uz.")
 
 S("Functions available: %1", "Dostępne funkcje: %1")