diff --git a/headers/posix/math.h b/headers/posix/math.h
index 789aff023d..1089c05d83 100644
--- a/headers/posix/math.h
+++ b/headers/posix/math.h
@@ -269,7 +269,6 @@ extern long double	tgammal(long double x);
 extern long double	truncl(long double x);
 
 /* some BSD non-ANSI or POSIX math functions */
-extern double		gamma_r(double x, int *y);
 extern double		j0(double x);
 extern double		j1(double x);
 extern double		jn(int x, double y);
@@ -293,7 +292,6 @@ extern float		jnf(int x, float y);
 extern float		y0f(float x);
 extern float		y1f(float x);
 extern float		ynf(int x, float y);
-extern float		gammaf_r(float x, int *y);
 extern float		lgammaf_r(float x, int *y);
 
 
diff --git a/src/system/libroot/posix/glibc/arch/x86/Jamfile b/src/system/libroot/posix/glibc/arch/x86/Jamfile
index ebd9e30afc..59fa2143a5 100644
--- a/src/system/libroot/posix/glibc/arch/x86/Jamfile
+++ b/src/system/libroot/posix/glibc/arch/x86/Jamfile
@@ -87,8 +87,8 @@ local genericSources =
 	w_j0.c w_j0f.c
 	w_j1.c w_j1f.c
 	w_jn.c w_jnf.c
-	w_lgamma.c w_lgammaf.c
-	w_lgamma_r.c w_lgammaf_r.c 
+	w_lgamma.c w_lgammaf.c w_lgammal.c
+	w_lgamma_r.c w_lgammaf_r.c w_lgammal_r.c
 	w_log.c w_logf.c w_logl.c
 	w_log10.c w_log10f.c w_log10l.c
 	w_log2.c w_log2f.c w_log2l.c