diff --git a/crap_eq.h b/crap_eq.h
index 8772bf6..8ca155d 100644
--- a/crap_eq.h
+++ b/crap_eq.h
@@ -1,7 +1,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#define BIQUAD_DOUBLE
 #include "crap_util.h"
 #include "param.h"
 
@@ -19,8 +18,8 @@ typedef struct {
 	float fs;
 } personal;
 
-static bq_t
-process_one(biquad *filters, bq_t samp)
+static double
+process_one(biquad *filters, double samp)
 {
 	for (int i = 0; i < BANDS; i++)
 		samp = biquad_run(&filters[i], samp);
diff --git a/crap_eq_const.h b/crap_eq_const.h
index 53b9784..e379153 100644
--- a/crap_eq_const.h
+++ b/crap_eq_const.h
@@ -1,6 +1,5 @@
 #include <string.h>
 
-#define BIQUAD_DOUBLE
 #include "crap_util.h"
 
 #define ID 0x0DEFACED
@@ -15,8 +14,8 @@ typedef struct {
 	biquad filters[2][BANDS];
 } personal;
 
-static bq_t
-process_one(biquad *filters, bq_t samp)
+static double
+process_one(biquad *filters, double samp)
 {
 	for (int i = 0; i < BANDS; i++)
 		samp = biquad_run(&filters[i], samp);
diff --git a/crap_util.h b/crap_util.h
index 98f8732..74db44f 100644
--- a/crap_util.h
+++ b/crap_util.h
@@ -7,16 +7,8 @@
 #define ANGULAR(fc, fs)     (2 * M_PI / (fs) * (fc))
 #define ANGULAR_LIM(fc, fs) (2 * M_PI / (fs) * LIMIT((fc), 1, (fs)/2))
 
-/* this is pretty gross;
- * it's too easy to define BIQUAD_DOUBLE in one file and not another */
-#ifdef BIQUAD_DOUBLE
-typedef double bq_t;
-#else
-typedef float bq_t;
-#endif
-
 typedef struct {
-	bq_t a1, a2, b0, b1, b2, x1, x2, y1, y2;
+	double a1, a2, b0, b1, b2, x1, x2, y1, y2;
 } biquad;
 
 typedef struct {
@@ -51,7 +43,7 @@ design(double cw, double sw,
     double num0, double num1, double num2,
     double den0, double den1, double den2);
 
-static bq_t
-biquad_run(biquad *bq, bq_t x);
+static double
+biquad_run(biquad *bq, double x);
 
 #include "crap_util_def.h"
diff --git a/crap_util_def.h b/crap_util_def.h
index 76aa22f..6e0326e 100644
--- a/crap_util_def.h
+++ b/crap_util_def.h
@@ -76,9 +76,9 @@ biquad_gen(filter_t type, double fc, double gain, double bw, double fs) {
 	return out;
 }
 
-static bq_t
-biquad_run(biquad *bq, bq_t x) {
-	bq_t y;
+static double
+biquad_run(biquad *bq, double x) {
+	double y;
 
 	y = bq->b0*x + bq->b1*bq->x1 + bq->b2*bq->x2
 	             + bq->a1*bq->y1 + bq->a2*bq->y2;