diff --git a/src/dbStatic/dbBase.h b/src/dbStatic/dbBase.h
index de0060de8..a857ca0a6 100644
--- a/src/dbStatic/dbBase.h
+++ b/src/dbStatic/dbBase.h
@@ -73,9 +73,9 @@ typedef enum {ASL0,ASL1} asLevel;
 
 /*Breakpoint Tables */
 typedef struct brkInt{ /* breakpoint interval */
-	float	raw;		/*raw value for beginning of interval	*/
-	float	slope;		/*slope for interval			*/
-	float	eng;		/*converted value for beginning of interval*/
+	double	raw;		/*raw value for beginning of interval	*/
+	double	slope;		/*slope for interval			*/
+	double	eng;		/*converted value for beginning of interval*/
 }brkInt;
 
 typedef struct brkTable { /* breakpoint table */