diff --git a/engine/common/gamma.c b/engine/common/gamma.c
index f1fe6e44..59b12059 100644
--- a/engine/common/gamma.c
+++ b/engine/common/gamma.c
@@ -15,9 +15,6 @@ GNU General Public License for more details.
 
 #include "common.h"
 #include "xash3d_mathlib.h"
-#if HAVE_TGMATH_H
-#include <tgmath.h>
-#endif
 
 //-----------------------------------------------------------------------------
 // Gamma conversion support
diff --git a/public/crtlib.c b/public/crtlib.c
index 5c9c24e3..bd67d490 100644
--- a/public/crtlib.c
+++ b/public/crtlib.c
@@ -21,9 +21,6 @@ GNU General Public License for more details.
 #include <time.h>
 #include "stdio.h"
 #include "crtlib.h"
-#if HAVE_TGMATH_H
-#include <tgmath.h>
-#endif
 
 void Q_strnupr( const char *in, char *out, size_t size_out )
 {
diff --git a/public/xash3d_mathlib.c b/public/xash3d_mathlib.c
index a6d1b7b2..39f5d1ba 100644
--- a/public/xash3d_mathlib.c
+++ b/public/xash3d_mathlib.c
@@ -18,9 +18,6 @@ GNU General Public License for more details.
 #include "com_model.h"
 #include "xash3d_mathlib.h"
 #include "eiface.h"
-#if HAVE_TGMATH_H
-#include <tgmath.h>
-#endif
 
 #define NUM_HULL_ROUNDS	ARRAYSIZE( hull_table )
 #define HULL_PRECISION	4
diff --git a/ref_gl/gl_beams.c b/ref_gl/gl_beams.c
index c5c5625a..c2b8830e 100644
--- a/ref_gl/gl_beams.c
+++ b/ref_gl/gl_beams.c
@@ -22,9 +22,6 @@ GNU General Public License for more details.
 #include "cl_tent.h"
 #include "pm_local.h"
 #include "studio.h"
-#if HAVE_TGMATH_H
-#include <tgmath.h>
-#endif
 
 #define NOISE_DIVISIONS	64	// don't touch - many tripmines cause the crash when it equal 128
 
diff --git a/ref_gl/gl_rmain.c b/ref_gl/gl_rmain.c
index e758be01..cc0d953e 100644
--- a/ref_gl/gl_rmain.c
+++ b/ref_gl/gl_rmain.c
@@ -19,9 +19,6 @@ GNU General Public License for more details.
 #include "beamdef.h"
 #include "particledef.h"
 #include "entity_types.h"
-#if HAVE_TGMATH_H
-#include <tgmath.h>
-#endif
 
 #define IsLiquidContents( cnt )	( cnt == CONTENTS_WATER || cnt == CONTENTS_SLIME || cnt == CONTENTS_LAVA )
 
diff --git a/ref_gl/gl_studio.c b/ref_gl/gl_studio.c
index aa9a8db6..81c78bf9 100644
--- a/ref_gl/gl_studio.c
+++ b/ref_gl/gl_studio.c
@@ -24,10 +24,6 @@ GNU General Public License for more details.
 //#include "client.h"
 #include "pmtrace.h"
 
-#if HAVE_TGMATH_H
-#include <tgmath.h>
-#endif
-
 #define EVENT_CLIENT	5000	// less than this value it's a server-side studio events
 #define MAX_LOCALLIGHTS	4