diff --git a/target/linux/generic/patches-3.10/201-extra_optimization.patch b/target/linux/generic/patches-3.10/201-extra_optimization.patch
index 051ede1c6b..6af3d01ba2 100644
--- a/target/linux/generic/patches-3.10/201-extra_optimization.patch
+++ b/target/linux/generic/patches-3.10/201-extra_optimization.patch
@@ -12,13 +12,3 @@
  endif
  
  include $(srctree)/arch/$(SRCARCH)/Makefile
-@@ -647,6 +647,9 @@ endif
- NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
- CHECKFLAGS     += $(NOSTDINC_FLAGS)
- 
-+# improve gcc optimization
-+CFLAGS += $(call cc-option,-funit-at-a-time,)
-+
- # warn about C99 declaration after statement
- KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
- 
diff --git a/target/linux/generic/patches-3.3/201-extra_optimization.patch b/target/linux/generic/patches-3.3/201-extra_optimization.patch
index 6fe8b0938d..e724891e4f 100644
--- a/target/linux/generic/patches-3.3/201-extra_optimization.patch
+++ b/target/linux/generic/patches-3.3/201-extra_optimization.patch
@@ -12,13 +12,3 @@
  endif
  
  include $(srctree)/arch/$(SRCARCH)/Makefile
-@@ -620,6 +620,9 @@ endif
- NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
- CHECKFLAGS     += $(NOSTDINC_FLAGS)
- 
-+# improve gcc optimization
-+CFLAGS += $(call cc-option,-funit-at-a-time,)
-+
- # warn about C99 declaration after statement
- KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
- 
diff --git a/target/linux/generic/patches-3.6/201-extra_optimization.patch b/target/linux/generic/patches-3.6/201-extra_optimization.patch
index ac26108459..f255a01c1a 100644
--- a/target/linux/generic/patches-3.6/201-extra_optimization.patch
+++ b/target/linux/generic/patches-3.6/201-extra_optimization.patch
@@ -12,13 +12,3 @@
  endif
  
  include $(srctree)/arch/$(SRCARCH)/Makefile
-@@ -627,6 +627,9 @@ endif
- NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
- CHECKFLAGS     += $(NOSTDINC_FLAGS)
- 
-+# improve gcc optimization
-+CFLAGS += $(call cc-option,-funit-at-a-time,)
-+
- # warn about C99 declaration after statement
- KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
- 
diff --git a/target/linux/generic/patches-3.8/201-extra_optimization.patch b/target/linux/generic/patches-3.8/201-extra_optimization.patch
index d94d2cf3a8..119655dfd3 100644
--- a/target/linux/generic/patches-3.8/201-extra_optimization.patch
+++ b/target/linux/generic/patches-3.8/201-extra_optimization.patch
@@ -12,13 +12,3 @@
  endif
  
  include $(srctree)/arch/$(SRCARCH)/Makefile
-@@ -645,6 +645,9 @@ endif
- NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
- CHECKFLAGS     += $(NOSTDINC_FLAGS)
- 
-+# improve gcc optimization
-+CFLAGS += $(call cc-option,-funit-at-a-time,)
-+
- # warn about C99 declaration after statement
- KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
- 
diff --git a/target/linux/generic/patches-3.9/201-extra_optimization.patch b/target/linux/generic/patches-3.9/201-extra_optimization.patch
index b7546d7577..bd8cc12260 100644
--- a/target/linux/generic/patches-3.9/201-extra_optimization.patch
+++ b/target/linux/generic/patches-3.9/201-extra_optimization.patch
@@ -12,13 +12,3 @@
  endif
  
  include $(srctree)/arch/$(SRCARCH)/Makefile
-@@ -647,6 +647,9 @@ endif
- NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
- CHECKFLAGS     += $(NOSTDINC_FLAGS)
- 
-+# improve gcc optimization
-+CFLAGS += $(call cc-option,-funit-at-a-time,)
-+
- # warn about C99 declaration after statement
- KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
-