diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index 3ca39ec745b..a6d488e426a 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -3650,6 +3650,7 @@ for sz, mulz in itertools.product([16, 32, 64], [False, True]):
 
     fadd = 'fadd@{}(contract)'.format(sz)
     option = 'options->fuse_ffma{}'.format(sz)
+    option_with_abs = 'options->fuse_ffma{}  && !options->avoid_ternary_with_fabs'.format(sz)
 
     late_optimizations.extend([
         ((fadd, (fmul, a, b), c), (ffma, a, b, c), option),
@@ -3658,10 +3659,10 @@ for sz, mulz in itertools.product([16, 32, 64], [False, True]):
          (ffma, ('fneg', a), b, c), option),
 
         ((fadd, ('fabs(is_only_used_by_fadd)', (fmul, a, b)), c),
-         (ffma, ('fabs', a), ('fabs', b), c), option),
+         (ffma, ('fabs', a), ('fabs', b), c), option_with_abs),
 
         ((fadd, ('fneg(is_only_used_by_fadd)', ('fabs', (fmul, a, b))), c),
-         (ffma, ('fneg', ('fabs', a)), ('fabs', b), c), option),
+         (ffma, ('fneg', ('fabs', a)), ('fabs', b), c), option_with_abs),
     ])
 
 late_optimizations.extend([
diff --git a/src/compiler/nir/nir_shader_compiler_options.h b/src/compiler/nir/nir_shader_compiler_options.h
index 571345f3399..5a884f36b7b 100644
--- a/src/compiler/nir/nir_shader_compiler_options.h
+++ b/src/compiler/nir/nir_shader_compiler_options.h
@@ -665,6 +665,11 @@ typedef struct nir_shader_compiler_options {
     */
    bool avoid_ternary_with_two_constants;
 
+   /* Avoid using fabs on sources to ternary operations
+    * r600 can't use source modifiers for these
+    */
+   bool avoid_ternary_with_fabs;
+
    /** Whether 8-bit ALU is supported. */
    bool support_8bit_alu;
 
diff --git a/src/gallium/drivers/r600/r600_pipe_common.c b/src/gallium/drivers/r600/r600_pipe_common.c
index c1c51f755b6..85b49dd0bca 100644
--- a/src/gallium/drivers/r600/r600_pipe_common.c
+++ b/src/gallium/drivers/r600/r600_pipe_common.c
@@ -1166,6 +1166,7 @@ bool r600_common_screen_init(struct r600_common_screen *rscreen,
 		.vectorize_tess_levels = 1,
 		.io_options = nir_io_mediump_is_32bit,
 		.vertex_id_zero_based = rscreen->info.gfx_level >= EVERGREEN,
+		.avoid_ternary_with_fabs = 1,
 	};
 
 	rscreen->nir_options = nir_options;