diff --git a/kdelibs-4.14.17-gcc6_literals.patch b/kdelibs-4.14.17-gcc6_literals.patch
deleted file mode 100644
index 70c36c2..0000000
--- a/kdelibs-4.14.17-gcc6_literals.patch
+++ /dev/null
@@ -1,43 +0,0 @@
-diff -up kdelibs-4.14.17/solid/solid/backends/shared/cpufeatures.cpp.gcc6 kdelibs-4.14.17/solid/solid/backends/shared/cpufeatures.cpp
---- kdelibs-4.14.17/solid/solid/backends/shared/cpufeatures.cpp.gcc6	2016-02-11 23:06:08.000000000 -0600
-+++ kdelibs-4.14.17/solid/solid/backends/shared/cpufeatures.cpp	2016-02-12 19:14:07.708788182 -0600
-@@ -51,23 +51,23 @@ static void sighandler( int )
- #endif
- 
- #ifdef __i386__
--  #define ASM_REG(reg)              "%e"reg
--  #define ASM_POP(reg)              "popl   %%e"reg"             \n\t"
--  #define ASM_PUSH(reg)             "pushl  %%e"reg"             \n\t"
--  #define ASM_XOR_REG(reg1, reg2)   "xorl   %%e"reg1", %%e"reg2" \n\t"
--  #define ASM_XOR_VAR(var, reg)     "xorl   "var",     %%e"reg"  \n\t"
--  #define ASM_CMP_REG(reg1, reg2)   "cmpl   %%e"reg1", %%e"reg2" \n\t"
--  #define ASM_MOV_REG(reg1, reg2)   "movl   %%e"reg1", %%e"reg2" \n\t"
--  #define ASM_MOV_VAR(var, reg)     "movl   "var",     %%e"reg"  \n\t"
-+  #define ASM_REG(reg)              "%e" reg
-+  #define ASM_POP(reg)              "popl   %%e" reg "             \n\t"
-+  #define ASM_PUSH(reg)             "pushl  %%e" reg "             \n\t"
-+  #define ASM_XOR_REG(reg1, reg2)   "xorl   %%e" reg1 ", %%e" reg2 " \n\t"
-+  #define ASM_XOR_VAR(var, reg)     "xorl   " var ",     %%e" reg "  \n\t"
-+  #define ASM_CMP_REG(reg1, reg2)   "cmpl   %%e" reg1 ", %%e" reg2 " \n\t"
-+  #define ASM_MOV_REG(reg1, reg2)   "movl   %%e" reg1 ", %%e" reg2 " \n\t"
-+  #define ASM_MOV_VAR(var, reg)     "movl   " var ",     %%e" reg "  \n\t"
- #elif defined(__x86_64__)
--  #define ASM_REG(reg)              "%r"reg
--  #define ASM_POP(reg)              "popq   %%r"reg"             \n\t"
--  #define ASM_PUSH(reg)             "pushq  %%r"reg"             \n\t"
--  #define ASM_XOR_REG(reg1, reg2)   "xorq   %%r"reg1", %%r"reg2" \n\t"
--  #define ASM_XOR_VAR(var, reg)     "xorq   "var",     %%r"reg"  \n\t"
--  #define ASM_CMP_REG(reg1, reg2)   "cmpq   %%r"reg1", %%r"reg2" \n\t"
--  #define ASM_MOV_REG(reg1, reg2)   "movq   %%r"reg1", %%r"reg2" \n\t"
--  #define ASM_MOV_VAR(var, reg)     "movq   "var",     %%r"reg"  \n\t"
-+  #define ASM_REG(reg)              "%r" reg
-+  #define ASM_POP(reg)              "popq   %%r" reg "             \n\t"
-+  #define ASM_PUSH(reg)             "pushq  %%r" reg "             \n\t"
-+  #define ASM_XOR_REG(reg1, reg2)   "xorq   %%r" reg1 ", %%r" reg2 " \n\t"
-+  #define ASM_XOR_VAR(var, reg)     "xorq   " var ",     %%r" reg "  \n\t"
-+  #define ASM_CMP_REG(reg1, reg2)   "cmpq   %%r" reg1 ", %%r" reg2 " \n\t"
-+  #define ASM_MOV_REG(reg1, reg2)   "movq   %%r" reg1 ", %%r" reg2 " \n\t"
-+  #define ASM_MOV_VAR(var, reg)     "movq   " var ",     %%r" reg "  \n\t"
- #endif
- 
- #ifdef __PPC__
diff --git a/kdelibs.spec b/kdelibs.spec
index 953fb3b..50c1045 100644
--- a/kdelibs.spec
+++ b/kdelibs.spec
@@ -193,9 +193,6 @@ Patch64: kdelibs-4.13.2-invokeTerminal.patch
 # newer glibc has 2 prototypes for trunc, check for ftrunc instead
 Patch65: kdelibs-4.14.17-glibc_trunc.patch
 
-# gcc6 FTBFS: literals
-Patch66:  kdelibs-4.14.17-gcc6_literals.patch
-
 # gcc6 FTBFS: maybe easier/cleaner to build with: -std=gnu++98 or -Wno-error-narrowing
 Patch67: kdelibs-4.14.17-gcc6_narrowing_hack.patch
 
@@ -483,7 +480,6 @@ sed -i -e "s|@@VERSION_RELEASE@@|%{version}-%{release}|" kio/kio/kprotocolmanage
 %patch62 -p1 -b .arm-plasma
 %patch64 -p1 -b .invokeTerminal
 %patch65 -p1 -b .glibc_trunc
-%patch66 -p1 -b .gcc6_literals
 %patch67 -p1 -b .gcc6_narrowing_hack
 
 # upstream patches