diff --git a/tools/i2cbusses.h b/tools/i2cbusses.h
index cbd794a..b089887 100644
--- a/tools/i2cbusses.h
+++ b/tools/i2cbusses.h
@@ -37,4 +37,6 @@ int parse_i2c_address(const char *address_arg);
 int open_i2c_dev(const int i2cbus, char *filename, const int quiet);
 int set_slave_addr(int file, int address, int force);
 
+#define MISSING_FUNC_FMT	"Error: Adapter does not have %s capability\n"
+
 #endif
diff --git a/tools/i2cdump.c b/tools/i2cdump.c
index 9138832..0d021c6 100644
--- a/tools/i2cdump.c
+++ b/tools/i2cdump.c
@@ -60,40 +60,35 @@ static int check_funcs(int file, int size, int pec)
 	switch(size) {
 	case I2C_SMBUS_BYTE:
 		if (!((funcs & I2C_FUNC_SMBUS_BYTE) == I2C_FUNC_SMBUS_BYTE)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have byte capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "byte");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_BYTE_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have byte read capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "byte read");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_WORD_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_READ_WORD_DATA)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have word read capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "word read");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_BLOCK_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have smbus block read capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "smbus block read");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_I2C_BLOCK_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have i2c block read capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "i2c block read");
 			return -1;
 		}
 		break;
diff --git a/tools/i2cget.c b/tools/i2cget.c
index 3bf3eb7..c3a3eec 100644
--- a/tools/i2cget.c
+++ b/tools/i2cget.c
@@ -63,30 +63,26 @@ static int check_funcs(int file, int size, int daddress, int pec)
 	switch (size) {
 	case I2C_SMBUS_BYTE:
 		if (!(funcs & I2C_FUNC_SMBUS_READ_BYTE)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have read byte capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "read byte");
 			return -1;
 		}
 		if (daddress >= 0
 		 && !(funcs & I2C_FUNC_SMBUS_WRITE_BYTE)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have write byte capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "write byte");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_BYTE_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have read byte data capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "read byte");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_WORD_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_READ_WORD_DATA)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have read word data capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "read word");
 			return -1;
 		}
 		break;
diff --git a/tools/i2cset.c b/tools/i2cset.c
index abba5a4..03ae22d 100644
--- a/tools/i2cset.c
+++ b/tools/i2cset.c
@@ -59,24 +59,21 @@ static int check_funcs(int file, int size, int pec)
 	switch (size) {
 	case I2C_SMBUS_BYTE:
 		if (!(funcs & I2C_FUNC_SMBUS_WRITE_BYTE)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have byte send capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "byte send");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_BYTE_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have byte write capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "byte write");
 			return -1;
 		}
 		break;
 
 	case I2C_SMBUS_WORD_DATA:
 		if (!(funcs & I2C_FUNC_SMBUS_WRITE_WORD_DATA)) {
-			fprintf(stderr, "Error: Adapter does "
-				"not have word write capability\n");
+			fprintf(stderr, MISSING_FUNC_FMT, "word write");
 			return -1;
 		}
 		break;