diff --git a/backend/Makefile.mingw b/backend/Makefile.mingw
index 9e0977fc..1192af77 100644
--- a/backend/Makefile.mingw
+++ b/backend/Makefile.mingw
@@ -27,7 +27,7 @@ STATLIB:=lib$(APP).a
 COMMON_OBJ:= common.o render.o png.o library.o ps.o large.o reedsol.o gs1.o svg.o
 ONEDIM_OBJ:= code.o code128.o 2of5.o upcean.o telepen.o medical.o plessey.o rss.o
 POSTAL_OBJ:= postal.o auspost.o imail.o
-TWODIM_OBJ:= code16k.o dmatrix.o dm200.o pdf417.o qr.o maxicode.o composite.o aztec.o code49.o code1.o gridmtx.o
+TWODIM_OBJ:= code16k.o dmatrix.o pdf417.o qr.o maxicode.o composite.o aztec.o code49.o code1.o gridmtx.o
 
 LIB_OBJ:= $(COMMON_OBJ) $(ONEDIM_OBJ) $(TWODIM_OBJ) $(POSTAL_OBJ)
 DLL_OBJ:= $(LIB_OBJ:.o=.lo) dllversion.lo
diff --git a/backend/plessey.c b/backend/plessey.c
index 0b31bd3a..883448f1 100644
--- a/backend/plessey.c
+++ b/backend/plessey.c
@@ -160,7 +160,7 @@ int msi_plessey_mod10(struct zint_symbol *symbol, unsigned char source[], int le
 		lookup(NEON, MSITable, source[i], dest);
 	}
 
-	/* caluculate check digit */
+	/* calculate check digit */
 	wright = 0;
 	n = !(length & 1);
 	for(i = n; i < length; i += 2)
@@ -434,7 +434,7 @@ int msi_plessey_mod1110(struct zint_symbol *symbol, unsigned char source[], cons
 		temp[temp_len] = '\0';
 	}
 
-	/* caluculate second (mod 10) check digit */
+	/* calculate second (mod 10) check digit */
 	wright = 0;
 	i = !(temp_len & 1);
 	for(; i < temp_len; i += 2)